Kenji SAWADA

Info-Powered Energy System Research CenterAssociate Professor
Cluster II (Emerging Multi-interdisciplinary Engineering)Associate Professor
Department of Mechanical and Intelligent Systems EngineeringAssociate Professor
  • Profile:
    　モデルベース制御を主軸にマイコンに関わる産業応用技術，さらに制御系のサイバーセキュリティ技術の開発を行ってきている．研究の柱は，適応・ロバスト・ハイブリッドなどの制御工学と，整数・半正定値計画などの数値最適化である．
    　2009年までの主な研究テーマは拘束システムに対する制御系解析・設計に関する研究である．2009年からは，理論研究の1つとして，数値最適化に基づく量子化制御に従事している．具体的には，ネットワーク化制御，組み込みシステム，ON/OFF型アクチュエータの制御のための基礎理論を研究している．また，応用研究としては，自動車，情報家電，ファクトリーオートメーションの制御に関わる基盤技術開発に関わっている．自動車分野では，変速機の制振制御，EV・HEVのバッテリー性能評価方法，自動車モデルのモデル検証方法の研究を行っている．情報家電分野では，エアコンのモデルベース制御による省エネ化，家電連携システムの研究を行っている．ファクトリーオートメーション分野では，工場内の自律無人搬送台車のモデル化と高精度位置決め制御，搬送計画指令の最適化に関わる研究に従事している．
    　2012年からのメインテーマは，携帯電話などの身近な製品から水道などの重要インフラの制御システムのセキュリティ技術開発である．これまで量子化制御や適応制御による侵入検知で培ってきた技術を用いて，サイバー攻撃のモデルベース検知・防御アルゴリズムの開発を目指す．
Researcher Information

Degree

  • Doctor of engineering, Osaka University

Research Keyword

  • スマートグリッド
  • 自律分散ロボット
  • ファクトリーオートメーション
  • Control System Security
  • 情報家電
  • 自動車
  • 制御工学

Field Of Study

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Control and systems engineering
  • Informatics, Mechanics and mechatronics

Educational Background

  • Apr. 2006 - Mar. 2009
    Osaka University, Graduate Schoolof Engineering, Department of Mechanical Engineering

Member History

  • Sep. 2023 - May 2027
    データ駆動制御とそのシステム評価に関する調査専門委員会, 電気学会, Society
  • Jun. 2023 - May 2027
    和文論文誌Ａ編集委員会 和文論文誌編集委員, 電子情報通信学会, Society
  • Jun. 2023 - May 2027
    英文論文誌Ａ編集委員会 英文論文誌編集委員, 電子情報通信学会, Society
  • Jun. 2023 - May 2025
    システム数理と応用研究専門委員会 専門委員, 電子情報通信学会, Society
  • Feb. 2024 - Mar. 2025
    委員長, 計測自動制御学会, 制御部門事業委員会, Society
  • Mar. 2023 - Feb. 2024
    制御部門事業委員会 副委員長, 計測自動制御学会, Society
  • Mar. 2022 - Mar. 2023
    ゲストエディタ, 計測自動制御学会 制御部門MSCS22特集号
  • Mar. 2020 - Feb. 2022
    Secretary, IEEE Control Systems Society Japan Chapter, Society
  • 01 Jan. 2019 - Dec. 2021
    副主査, 計測自動制御学会制御部門「真なるダイナミクスの追究による次世代システム制御理論調査研究会」, Society
  • Nov. 2021
    「FAセキュリティモデル研究会」委員長, FAオープン推進協議会
  • Mar. 2019 - Feb. 2021
    委員（制御部門）, 計測自動制御学会 会誌出版委員会
  • Dec. 2020
    Member, IFAC TC 2.1 Control Design, Society
  • Mar. 2018 - Mar. 2020
    制御分野 アソシエイトエディタ, 計測自動制御学会 計測自動制御学会論文集 論文集・編集委員会
  • Mar. 2018 - Feb. 2020
    Treasurer, IEEE Control Systems Society Japan Chapter, Society
  • Mar. 2018 - Feb. 2020
    Associate Editor (Control), SICE Annual Conference, Editorial Board
  • Jan. 2020
    Member, ISAROB International Organizing Committee, Society
  • 01 Jan. 2018 - Dec. 2019
    委員, 計測自動制御学会制御部門「SICE超スマート社会実現のためのシステム制御技術調査研究会」, Society
  • Aug. 2016 - Aug. 2018
    委員, 電気学会 Cyber Physical Systems Security 特別調査専門委員会（第II期）, Society
  • Apr. 2016 - Mar. 2018
    1号委員, 電気学会電気システムセキュリティ特別技術委員会, Society
  • May 2017 - Jan. 2018
    ゲストエディタ, 計測自動制御学会 計測と制御 特集号「産業オートメーションにおけるシステム連携の最新動向」, Society
  • Dec. 2017
    Member, IFAC TC 3.1. Computers for Control, Society
  • Oct. 2016
    委員, 計測自動制御学会 産業応用部門 計測・制御ネットワーク部会
  • Jul. 2013 - Sep. 2016
    サイバーセキュリティ機器専門委員, 公益財団法人日本適合性認定協会製品技術委員会
  • Aug. 2014 - Jul. 2016
    委員, 電気学会 Cyber Physical Systems Security 特別調査専門委員会, Society
  • 01 Jun. 2016
    顧問, 技術研究組合制御システムセキュリティセンター, Government
  • Oct. 2014 - Mar. 2016
    委員, 独立行政法人情報処理推進機構・スマートメータシステムのセキュリティ評価に関する委員会
  • Apr. 2010 - Mar. 2016
    委員, 計測自動制御学会制御部門広報委員会
  • Nov. 2011 - Mar. 2013
    委員, 独立行政法人情報処理推進機構・制御システム情報セキュリティ委員会
  • Apr. 2011 - Mar. 2012
    委員長, 計測自動制御学会制御部門広報委員会
  • Apr. 2010 - Mar. 2012
    委員, 計測自動制御学会制御部門制御理論部会
  • Apr. 2010 - Mar. 2011
    副委員長, 計測自動制御学会制御部門広報委員会
Research Activity Information

Award

  • Dec. 2019
    日本機械学会
    電磁比例弁内のスプールに作用するクーロン摩擦力に起因した不安定振動の解析と安定化させるための設計法
    2019年度FA財団論文賞, 日産自動車株式会社;山藤勝彦;山本建;澤田賢治
    Publisher
  • Apr. 2019
    日本機械学会
    電磁比例弁内のスプールに作用するクーロン摩擦力に起因した不安定振動の解析と安定化させるための設計法
    2018年度日本機械学会賞（論文）, 日産自動車株式会社;山藤勝彦;山本建;澤田賢治
    Publisher
  • Mar. 2019
    計測自動制御学会制御部門
    縮退運転システムおよび協調型ホワイトリストによる制御システムのセキュリティ技術開発
    計測自動制御学会制御部門・パイオニア技術賞, 澤田賢治
    Japan society
  • Jan. 2019
    Journal of Artificial Life and Robotics
    Journal of Artificial Life and Robotics Excellent Reviewer Award 2019
    Official journal
  • Nov. 2018
    計測自動制御学会産業応用部門
    Maximum transportation throughput of automated guided vehicle system by use of models of traffic capacity and traffic capacity consumption
    計測自動制御学会産業応用部門・技術賞, 熊谷賢治;澤田賢治;新誠一
    Japan society
  • Jun. 2018
    公益財団法人油空圧機器技術振興財団
    電磁比例弁内のスプールに作用するクーロン摩擦力に起因した不安定振動の解析と安定化させるための設計法
    優秀論文顕彰, 日産自動車株式会社;山藤勝彦;山本建;澤田賢治
    Publisher
  • Mar. 2016
    計測自動制御学会制御部門
    モデル予測制御を用いた半導体の搬送スケジューリングの高速化
    部門大会技術賞, 中村亮介;澤田賢治;新誠一;熊谷賢治;米田尚登
    Japan society
  • Dec. 2015
    FA財団
    状態空間表現による自律無人搬送台車のタスク割当てと経路計画の同時最適化
    FA財団論文賞, 中村亮介;澤田賢治;新誠一;熊谷賢治;米田尚登
    Others
  • Nov. 2014
    2014 CACS International Automatic Control Conference
    Taiwan
    Finalist of CACS 2014 Best Paper Awards (Best Application Paper), Ryosuke Nakamura;Kenji Sawada;Seiichi Shin;Kenji Kumagai;Hisato Yoneda
    International society, Taiwan, Province of China
  • Dec. 2010
    計測自動制御学会
    MLD表現に基づく搬送システムの最適化
    計測自動制御学会 システム・情報部門学術講演会 2010年度奨励賞

Paper

  • Filtering Function to Mitigate the Impact of Cyber-Attacks in Cooperative Adaptive Cruise Control
    Takuma Fujimoto; Kenji Sawada; Yuki Minami; Katsuhiko Sando
    Corresponding, Journal of Robotics and Mechatronics, 36, 3, Jun. 2024, Peer-reviwed
    English
  • Synthesis of resilient fallback control system under cyber-attacks via supervisory control
    Kousei Sakata; Kenji Sawada; Takashi Ogura; Junya Fujita; Noritaka Matsumoto
    Advanced Robotics, Informa UK Limited, 1-13, 25 Apr. 2024, Peer-reviwed
    Scientific journal
    URL
    DOI URL
  • 有限オートマトンと経路探索に基づくサイバー攻撃発生時の回復動作の導出
    池田佳輝; 澤田賢治; 藤田淳也; 小倉貴志; 阪田恒晟
    Corresponding, システム制御情報学会論文集, 37, 4, 109-118, Apr. 2024, Peer-reviwed
  • Model-based Security Countermeasure Designing Methodology for Industrial Control Systems based on Cyber Kill Chains and Defense-in-depth Models
    Junya Fujita; Daisuke Tsuji; Sumito Yazawa; Atsurou Sakamoto; Kenji Sawada; Osamu Kaneko
    Transactions of the Institute of Systems, Control and Information Engineers, The Institute of Systems, Control and Information Engineers, 37, 1, 1-11, Apr. 2024, Peer-reviwed
    Scientific journal, Japanese
    URL
    DOI URL
  • Model Reconstruction via Hieralchical Supervisory Control with Cyber Attacks
    Kanta Ogawa; Kenji Sawada
    Corresponding, 2024 IEEE International Conference on Consumer Electronics (ICCE), IEEE, 06 Jan. 2024, Peer-reviwed
    International conference proceedings
    URL
    DOI URL
  • Direct Consideration of Passenger States for Ride Comfort Improvement in Autonomous Vehicle's Velocity Planning
    Takumi Todaka; Kaito Sato; Kenji Sawada; Junichi Takano; Katsuhiko Sando; Shohei Imaji
    AROB 29th 2024, Jan. 2024, Peer-reviwed
  • On the Relationship between Opacity and Place-Invariants of Asymmetric Dual Control Systems
    Kumi Aizawa; Kenji Sawada
    Corresponding, AROB 29th 2024, Jan. 2024, Peer-reviwed
  • MPS法の分散計算化による群ロボットの流体的衝突回避の実現
    Shotaro SHIBAHARA; Kenji SAWADA
    Corresponding, Transactions of the Society of Instrument and Control Engineers, The Society of Instrument and Control Engineers, 60, 3, 288-299, 2024, Peer-reviwed
    Scientific journal
    URL
    DOI URL
  • Poisoning Attack on VIMT and Its Adverse Effect
    Taichi Ikezaki; Osamu Kaneko; Kenji Sawada; Junya Fujita
    Journal Artificial Life and Robotics, 2024, Peer-reviwed
    Scientific journal, English
  • Anomaly Detection in LiDAR Data Using Virtual and Real Observations
    Keiichiro Hattori; Ranulfo Bezerra; Shotaro Kojima; Yoshito Okada; Kazunori Ohno; Shintaro Ishihara; Kenji Sawada; Satoshi Tadokoro
    2023 21st International Conference on Advanced Robotics (ICAR), IEEE, 05 Dec. 2023, Peer-reviwed
    International conference proceedings
    URL
    DOI URL
  • A Structured Cyber Attack Representation Model based on the Diamond Model and Adversary States
    Junya Fujita; Takashi Ogura; Kazuya Okochi; Noritaka Matsumoto; Kenji Sawada; Osamu Kaneko
    IEEE Access, Institute of Electrical and Electronics Engineers (IEEE), 1-1, Dec. 2023, Peer-reviwed
    Scientific journal
    URL
    DOI URL
  • Packet Analysis and Information Theory on Attack Detection for Modbus TCP
    Tatsuya Nishiuchi; Shintaro Fujita; Yohei Watanabe; Mitsugu Iwamoto; Kenji Sawada
    IECON 2023, IECON23-000812, Oct. 2023, Peer-reviwed
    International conference proceedings, English
  • On Interrupt Location Design for Vehicular Platoon via Eigenvalue Constraint
    Takeshi Hyodo; Kaito Sato; Kenji Sawada
    Last, GCCE2023, Oct. 2023, Peer-reviwed, Invited
    International conference proceedings, English
  • Prototype Experimental Environment Using Actual Equipment for Remote Control Security Verification
    Masatoshi Enomoto; Kenji Sawada; Shu Hosokawa; Kazutaka Matsuzaki
    GCCE2023, Oct. 2023, Peer-reviwed, Invited
    International conference proceedings, English
  • Long-distance Remote Security Diagnostics during Maintenance Testing: A Practical Application and Evaluation
    Kazutaka Matsuzaki; Masatoshi Enomoto; Kenji Sawada
    SECURWARE 2023, 74-75, Sep. 2023, Peer-reviwed
    International conference proceedings, English
  • On the Feedback Type Prediction Governor for CACC System
    Fujimoto Takuma; Sawada Kenji
    Last, SICE Annual Conference 2023, FrAMT1.5, Sep. 2023, Peer-reviwed
    International conference proceedings, English
  • MPC Path Planning Considering Ride Comfort
    Todaka Takumi; Sato Kaito; Sawada Kenji; Takano Junichi; Sando Katsuhiko
    Last, SICE Annual Conference 2023, FrPMT9.1, Sep. 2023, Peer-reviwed, Invited
    International conference proceedings, English
  • On Multi-Rate Prediction Governor for CACC System with Sensor Errors and Communication Delays
    Fujimoto Takuma; Sawada Kenji
    Last, IFAC World Congress 2023, TuCT2.5, Jul. 2023, Peer-reviwed
    International conference proceedings, English
  • Continuous-Time Receding-Horizon Estimation Via Primal-Dual Dynamics and Stability Analysis
    Kaito Sato; Kenji Sawada
    Last, IFAC World Congress 2023, FrA16.4, Jul. 2023, Peer-reviwed
    International conference proceedings, English
  • Ladder Implementation of Resilient Fallback Logic against Cyberattacks
    Sakata Kousei; Ogura Takashi; Matsumoto Noritaka; Sawada Kenji
    IFAC world congress 2023, TuC19.5, Jul. 2023, Peer-reviwed, Invited
    International conference proceedings, English
  • Remote Security Assessment for Cyber-Physical Systems: Adapting Design Patterns for Enhanced Diagnosis
    Kazutaka Matsuzaki; Kenji Sawada; Shinich Honiden
    SECRYPT 2023, RP-133, Jul. 2023, Peer-reviwed
    International conference proceedings, English
  • Continuous-Time Receding-Horizon Estimation via Primal-Dual Dynamics on Vehicle Path-Following Control
    Kaito Sato; Kenji Sawada
    Journal of Robotics and Mechatronics, Fuji Technology Press Ltd., 35, 2, 298-307, 20 Apr. 2023, Peer-reviwed, In vehicle control, state estimation is essential even as the sensor accuracy improves with technological development. One of the vehicle estimation methods is receding-horizon estimation (RHE), which uses a past series of the measured state and input of the plant, and determines the estimated states based on linear or quadratic programming. It is known that RHE can estimate the vehicular state to which the extended Kalman filter cannot be applied owing to modeling errors. This study proposes a new computational form of the RHE based on primal-dual dynamics. The proposed form is expressed by a dynamic system; therefore, we can consider the computational stability based on the dynamic system theory. In this study, we propose a continuous-time representation of the RHE algorithm and redundant filters to improve the convergence performance of the estimation and demonstrate its effectiveness through a vehicle path-following control problem.
    Scientific journal, English
    URL
    DOI URL
  • Polygonal obstacle avoidance method for swarm robots via fluid dynamics
    Shotaro Shibahara; Kenji Sawada
    Corresponding, Artificial Life and Robotics, Springer Science and Business Media LLC, 28, 2, 435-447, 13 Mar. 2023, Peer-reviwed
    Scientific journal, English
    URL
    URL 2
    DOI URL
  • Incentive and nudge design for human behavioural change
    Riko Asanaka; Masaki Inoue; Toshiki Homma; Kenji Sawada
    SICE Journal of Control, Measurement, and System Integration, Informa UK Limited, 48-54, 26 Feb. 2023, Peer-reviwed
    Scientific journal, English
    URL
    DOI URL
  • Autonomous decentralized lighting control system with enumerative anomaly detection
    Kumi Aizawa, Kenji Sawada, Shintaro Fujita, Yoshiki Ikeda, Kanta Ogawa
    AROB 28th 2023, 836-841, 27 Jan. 2023, Peer-reviwed, False
    International conference proceedings, English
  • On switched objective function focused on driver's condition for shared control
    Yuzuna Horiuchi, Kenji Sawada
    AROB 28th 2023, 288-293, 25 Jan. 2023, Peer-reviwed, False
    International conference proceedings, English
  • Dependable Connectivity for Cyber Physical Human Systems in Open Fields
    Noritaka Matsumoto; Hiroshi Iwasawa; Teruaki Sakata; Hiromichi Endoh; Kenji Sawada; Osamu Kaneko
    IEEE Transactions on Consumer Electronics, Institute of Electrical and Electronics Engineers (IEEE), 1-1, 2023, Peer-reviwed
    Scientific journal, English
    URL
    DOI URL
  • Model Verification of Fallback Control System Under Cyberattacks Via UPPAAL
    Kousei Sakata; Shintaro Fujita; Kenji Sawada; Hiroshi Iwasawa; Hiromichi Endoh; Noritaka Matsumoto
    Advanced Robotics, Taylor & Francis, 37, 3, 156-168, 01 Nov. 2022, Peer-reviwed
    Scientific journal, English
    DOI URL
  • Vulnerability Modeling and Protection Strategies via Supervisory Control Theory
    Kanta Ogawa; Kenji Sawada; Kosei Sakata
    IEEE GCCE, 512-513, 01 Oct. 2022, Peer-reviwed
    International conference proceedings, English
  • On the Prediction Governor Application to Adaptive Cruise Control
    Takuma Fujimoto; Kenji Sawada
    SICE Annual Conference, 1096-1099, 06 Sep. 2022, Peer-reviwed
    International conference proceedings, English
  • Human-In-The-Loop System for Rear-Wheel Steering Control Via Primal-Dual Dynamics
    Kaito Sato; Kenji Sawada
    SICE Annual Conference, 584-587, 06 Sep. 2022, Peer-reviwed
    International conference proceedings, English
  • Continuous-Time Receding-Horizon Estimation via Primal-Dual Dynamics
    Kaito Sato; Kenji Sawada
    IFAC ROCOND, 77-80, 31 Aug. 2022, Peer-reviwed
    International conference proceedings, English
  • Demand for-graph evaluation of traffic congestion due to Altruistic Lane Changes of CAVs
    Yukari Mochizuki; Kenji Sawada
    IEEE CCTA, 334-340, 23 Aug. 2022, Peer-reviwed
    International conference proceedings, English
  • 車群位置推定のための補間型分散協調オブザーバとオンライン更新
    若狭拓馬; 澤田賢治
    IEEJ Transactions on Electronics, Information and Systems, IEEJ, 142, 3, 239-250, 01 Mar. 2022, Peer-reviwed
    Scientific journal, Japanese
  • Diamond modelと攻撃状態に基づくサイバー攻撃シナリオ構造化表現モデル
    藤田淳也; 小倉貴志; 大河内一弥; 松本典剛; 澤田賢治; 金子修
    IEEJ Transactions on Electronics, Information and Systems, IEEJ, 142, 3, 328-338, 01 Mar. 2022, Peer-reviwed
    Scientific journal, Japanese
  • Network weight and time-varying potential function for obstacle avoidance of swarm robots in column formation
    Shotaro Shibahara; Takuma Wakasa; Kenji Sawada
    Corresponding, SICE Journal of Control, Measurement, and System Integration, Informa UK Limited, 15, 1, 24-35, 18 Feb. 2022, Peer-reviwed
    Scientific journal, English
    URL
    DOI URL
  • Synthesis and Implementation of Resilient Fallback Control Logic Under Cyberattacks
    Kousei Sakata; Shintaro Fujita; Kenji Sawada
    AROB 27th 2022, 1184-1189, 25 Jan. 2022, Peer-reviwed
    International conference proceedings, English
  • Examination of Allowlist Using Markov Decision Process for Industrial Control Systems
    Shintaro Fujita; Kenji Sawada
    AROB 27th 2022, 1180-1183, 25 Jan. 2022, Peer-reviwed
    International conference proceedings, English
  • Polygon-Wall based Obstacle Avoidance for Swarm Robots in Column Formation
    Shotaro Shibahara; Kenji Sawada
    AROB 27th 2022, 909-913, 25 Jan. 2022, Peer-reviwed
    International conference proceedings, English
  • Adaptive Cruise Control to reflect driver individuality via Human-In-the-loop-system
    Haruka Matsushita; Kenji Sawada
    AROB 27th 2022, 266-271, 25 Jan. 2022, Peer-reviwed
    International conference proceedings, English
  • An analysis of expansion and reduction speeds of traffic jams on graph exploration
    Yukari Mochizuki; Kenji Sawada
    Artificial Life and Robotics, Springer Science and Business Media LLC, 27, 3, 487-494, 21 Jan. 2022, Peer-reviwed
    Scientific journal, English
    URL
    URL 2
    DOI URL
  • Model Verification of Resilient Third-Party Monitoring System Against Cyberattacks
    Kousei Sakata; Shintaro Fujita; Kenji Sawada
    IEEE ICCE, 1-6, 07 Jan. 2022, Peer-reviwed
    International conference proceedings, English
  • Anomaly Detection and Anomaly Location Model for Multiple Attacks Using Finite Automata
    Yoshiki Ikeda; Kenji Sawada
    IEEE ICCE, 1-6, 07 Jan. 2022, Peer-reviwed
    International conference proceedings, English
  • Asset Management Method of Industrial IoT Systems for Cyber-security Countermeasure
    Noritaka Matsumoto; Junya Fujita; Hiromichi Endoh; Tsutomu Yamada; Kenji Sawada; Osamu Kaneko
    Information, MDPI, 12, 11, 460---, 01 Nov. 2021, Peer-reviwed
    Scientific journal, English
  • Multi-Rate Switched Pinning Control for Velocity Control of Vehicle Platoons
    Takuma Wakasa; Kenji Sawada
    The IEICE Transactions on Fundamentals, IEICE, E104-A, 11, 1461-1469, 01 Nov. 2021, Peer-reviwed
    Scientific journal, English
  • On MPC-based Driver Assistance System for Driver Preview Action
    Yuzuna Horiuchi; Katsuhiko Sando; Kenji Sawada
    SICE Annual Conference, 449-452, 08 Sep. 2021, Peer-reviwed
    International conference proceedings, English
  • Network Weight Function for Obstacle Avoidance of Swarm Robots in Column Formation
    Shotaro Shibahara; Takuma Wakasa; Kenji Sawada
    SICE Annual Conference, 259-262, 08 Sep. 2021, Peer-reviwed
    International conference proceedings, English
  • PLCの動作順序を監視するホワイトリストの自動生成手法
    藤田真太郎; 澤田賢治; 新誠一; 細川嵩
    Transactions of the Society of Instrument and Control Engineers, Society of Instrument and Control Engineers, 57, 08, 367-377, 01 Aug. 2021, Peer-reviwed
    Scientific journal, Japanese
  • H∞制御を用いた摩擦伝達装置のジャダー抑制
    山藤勝彦; 橋本真; 山本建; 澤田賢治
    Transactions of the Society of Instrument and Control Engineers, Society of Instrument and Control Engineers, 57, 07, 324-333, 01 Jul. 2021, Peer-reviwed, Judder is well known as a vibration that occurs in a dry clutch. In order to maintain the ride quality and quietness of dry clutches, research on judder analysis and mechanical design to suppress judder is actively pursued. This paper describes the design and implementation of robust control techniques as an approach to suppressing judder during gear shifting in traction-controlled transmissions. This paper is concerned with transmissions that exhibit strongly nonlinear frictional characteristics that can only be approximated by higher order polynomials. Specifically, the coefficient of friction varies significantly nonlinearly with the rotational speed during gear shifting. In this paper, the controller is designed by expressing this nonlinear property as the uncertainty of the frequency. Simulation and bench test results are presented to validate the validity of such an approach. The results show that judder-free shifting is possible with the proposed approach. Furthermore, the requirements of three controllers are presented by analyzing the robust controllers.
    Scientific journal, Japanese
    URL
    URL 2
    DOI URL
  • A Sparse Pinning Control for Vehicle Platoon via Sequential l1 Optimization
    Takuma Wakasa; Kenji Sawada
    ISIE 2021, TS-23.8---, 20 Jun. 2021, Peer-reviwed
    International conference proceedings, English
  • Analysis and stabilizing design of self-excited oscillation in a loading cam using a wedge effec
    Katsuhiko SANDO; Takeshi YAMAMOTO; Kenji SAWADA; Tomoyuki TANIGUCHI; Nobuyuki SOWA; Haruki MORI; Takahiro KONDO
    Mechanical Engineering Journal, The Japan Society of Mechanical Engineers, 8, 2, Article ID: 20-00497---, 01 Apr. 2021, Peer-reviwed,

    This paper describes a design method of a friction reducer device using a loading cam to suppress unstable vibration. Nonlinear simulation and energy analysis of numerical solutions demonstrates that destabilization is caused by the large phase difference between the slipping velocity in the translation direction and that in the rotation direction. It was found that similarly unstable vibration occurs in various structures using wedge rollers with translational and rotational motion. The analytical equation could be simplified by focusing on the motion factor that affects the slip velocity of the power transmission surface, which is the factor of vibration. Consequently, the design method for suppressing vibration could be expressed by a mathematical formula. This equation is validated by using the results of experiments conducted in the previous work of the current authors. Furthermore, from this equation, we proposed that vibration could be suppressed by the parameter balance of the power transmission device without using damping. The power transmission surface slips when a quick torque is input and damping is used. The proposed design can handle a quick torque response and reduce the weight of the reducer. Specifically, the shape of the wedge roller is made lighter, so that the moment of inertia of the roller is not lowered, or the wedge roller is set as a small roller.


    Scientific journal, English
    DOI URL
  • ヘテロジニアスなエージェント群のグラフ探索における役割交換と探索効率の関係
    Yukari Mochizuki; Kenji Sawada
    Transactions of the Institute of Systems, Control and Information Engineers, 34, 10, 269-278, 27 Feb. 2021, Peer-reviwed
    Scientific journal, Japanese
  • Synthesis of Resilient Third-Party Monitoring System Against Cyberattacks via Supervisory Control
    Kousei Sakata; Shintaro Fujita; Kenji Sawada
    IEEE ICCE, -----, 18 Jan. 2021, Peer-reviwed
    International conference proceedings, English
  • OpenPLC based control system testbed for PLC whitelisting system
    Shintaro Fujita; Kosuke Hata; Akinori Mochizuki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    Artificial Life and Robotics, Springer, 26, 1, 149-154, 01 Jan. 2021, Peer-reviwed
    Scientific journal, English
    DOI URL
  • Distributed Cooperative Partial-State Observer for Position Estimation of Vehicle Platoon
    Takuma Wakasa; Kenji Sawada
    IECON2020, 186-191, 19 Oct. 2020, Peer-reviwed
    International conference proceedings, English
  • Rear-wheel steering control reflecting driver personality via Human-In-The-Loop System
    Haruka Matsushita; Kaito Sato; Mamoru Sakura; Kenji Sawada; Seiichi Shin; Masaki Inoue
    SMC2020, 356-362, 12 Oct. 2020, Peer-reviwed
    International conference proceedings, English
  • Method of Asset-Configuration Management for Strengthening Cybersecurity of Industrial Control Systems
    Noritaka Matsumoto; Junya Fujita; Hiromichi Endo; Tsutomu Yamada; Kenji Sawada; Osamu Kaneko
    SICE Annual Conference, 35-38, 23 Sep. 2020, Peer-reviwed
    International conference proceedings, English
  • Investigation of Cyber Attack Emulation Methodology for Industrial Control Systems
    Junya Fujita; Takashi Ogura; Noritaka Matsumoto; Osamu Kaneko; Kenji Sawada
    SICE Annual Conference, 31-34, 23 Sep. 2020, Peer-reviwed
    International conference proceedings, English
  • On the Instant Iterative Learning MPC for Nonlinear Systems
    Kaito Sato; Kenji Sawada; Masaki Inoue
    SICE Annual Conference, 1166-1171, 23 Sep. 2020, Peer-reviwed
    International conference proceedings, English
  • Path Planning and Tracking Method for Multiple Platoons via Switched Pinning Control
    Takuma Wakasa; Kenji Sawada
    SICE Annual Conference, 1159-1162, 23 Sep. 2020, Peer-reviwed
    International conference proceedings, English
  • A consideration of white list creating algorithm for industrial network protocols at network switch
    Masatoshi Enomoto; Kenji Sawada; Shu Hosokawa
    SICE Annual Conference, IEEE, 45-50, 23 Sep. 2020, Peer-reviwed
    International conference proceedings, English
    URL
    DOI URL
  • モデルベース開発の為のエネルギー検証自動化とモデリングガイドライン
    佐倉衛; 澤田賢治; 新誠一; 金子修; 松田功
    IEEJ Transactions on Electronics, Information and Systems, IEEJ, 140, 9, 1064-1071, 01 Sep. 2020, Peer-reviwed
    Scientific journal, Japanese
  • An Analysis of the Worst-case Disturbance on Airplane Vertical Acceleration using the Generic Transport Model
    Hideki Fukunaga; Yoshiro Hamada; Kenji Sawada; Seiichi Shin
    Transactions of the Institute of Systems, Control and Information Engineers, The Institute of Systems, Control and Information Engineers, 33, 8, 250-252, 15 Aug. 2020
    Scientific journal
    URL
    DOI URL
  • Generic Transport Modelを用いた航空機の上下加速度に対する最悪外乱の一解析
    福永秀樹; 濱田吉郎; 澤田賢治; 新誠一
    Transactions of the Institute of Systems, Control and Information Engineers, 33, 8, 250-252, 01 Aug. 2020, Peer-reviwed
    Scientific journal, Japanese
  • Event-Triggered Switched Pinning Control for Merging or Splitting vehicle Platoons
    Takuma Wakasa; Kenji Sawada; Seiichi Shin
    IFAC World Congress 2020, Paper ID:3004---, 12 Jul. 2020, Peer-reviwed
    International conference proceedings, English
  • Periodic Event-Triggered Control for Extended Plants of Linear Systems - A Convex Approach
    Hiroyuki Ichihara; Kenji Sawada; Koichi Kobayashi; Sophie Tarbouriech
    IFAC World Congress 2020, Paper ID:1021---, 12 Jul. 2020, Peer-reviwed
    International conference proceedings, English
  • Switched pinning control for merging and splitting maneuvers of vehicle platoons
    Takuma Wakasa; Yoshiki Nagatani; Kenji Sawada; Seiichi Shin
    The IEICE Transactions on Fundamentals, IEICE, E103-A, 4, 657-667, 01 Apr. 2020, Peer-reviwed
    Scientific journal, English
  • 拡大系に対する周期的事象駆動制御系の設計
    市原 裕之; 山本 将史; 澤田賢治
    Transactions of the Society of Instrument and Control Engineers, Society of Instrument and Control Engineers, 56, 04, 236-242, 01 Apr. 2020, Peer-reviwed
    Scientific journal, Japanese
  • Experimental Verification of Fallback Control System on Whitelisting System for Industrial Controller
    Shintaro Fujita; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    AROB 25th 2020, 570-573, 22 Jan. 2020, Peer-reviwed
    International conference proceedings, English
  • Modeling guideline for the energy-based auto-verification
    Mamoru Sakura; Kenji Sawada; Seiichi Shin; Osamu Kaneko; Isao Matsuda
    AROB 25th 2020, 171-176, 22 Jan. 2020, Peer-reviwed
    International conference proceedings, English
  • Modeling of third-party monitoring system using timed automata
    Kousei Sakata; Shintaro Fujita; Kenji Sawada; Seiichi Shin
    AROB 25th 2020, 182-187, 22 Jan. 2020, Peer-reviwed
    International conference proceedings, English
  • On the Profile Verification of IoT Application on Node-RED
    Takuya Niikura; Kenji Sawada; Seiichi Shin
    AROB 25th 2020, 177-181, 22 Jan. 2020, Peer-reviwed
    International conference proceedings, English
  • On the implementation of multiple anomaly detection functions to a third-party monitoring system for secured control
    Kousei Sakata; Shintaro Fujita; Kenji Sawada; Seiichi Shin; Shu Hosokawa; Ippei Maeta
    SICE SII, 1254-1258, 15 Jan. 2020, Peer-reviwed
    International conference proceedings, English
  • Switched Pinning Control for Vehicle Platoons via Mixed Logical Dynamical System Modeling
    Takuma Wakasa; Yoshiki Nagatani; Kenji Sawada; Seiichi Shin
    SICE SII, 449-454, 13 Jan. 2020, Peer-reviwed
    International conference proceedings, English
  • エネルギー保存則に基づく複合物理領域モデルの検証
    佐倉衛; 澤田賢治; 新誠一; 金子修; 松田功; 村上徹
    IEEJ Transactions on Electronics, Information and Systems, IEEJ, 139, 11, 1304-1311, 01 Nov. 2019, Peer-reviwed
    Scientific journal, Japanese
  • An Approach to Renewable-Energy Dominant Grids via Distributed Electrical Energy Platform for IoT Systems
    Haruhisa Ichikawa; Shinji Yokogawa; Yuusuke Kawakita; Kenji Sawada; Tomah Sogabe; Atsushi Minegishi; Hiromitsu Uehara
    IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids, IEEE, -----, 21 Oct. 2019, Peer-reviwed
    International conference proceedings, English
    URL
    DOI URL
  • Model Verification and Exhaustive Testing for Whitelist Function of Industrial Control System
    Shintaro Fujita; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    IECON2019, 5734-5739, 17 Oct. 2019, Peer-reviwed
    International conference proceedings, English
  • The Energy-Based Auto-Verification focused on Hierarchical Model Structure for Model Based Development
    Mamoru Sakura; Kenji Sawada; Seiichi Shin; Osamau Kaneko; Isao Matsuda
    IECON2019, 3689-3696, 17 Oct. 2019, Peer-reviwed
    International conference proceedings, English
  • Control System Security Training and Education in UEC
    Kenji Sawada; Shu Hosokawa
    SICE Annual Conference, 1762-1765, 13 Sep. 2019, Peer-reviwed
    International conference proceedings, English
  • Event Triggered Model Predictive Control for Descending Drone
    Kaito Sato; Jun-ichi Toji; Kenji Sawada; Hiroyuki Ichihara; Seiichi Shin
    SICE Annual Conference, 1444-1447, 13 Sep. 2019, Peer-reviwed
    International conference proceedings, English
  • Dynamic Profile Modeling for Node Connectivity Verification on Node-RED
    Takuya Niikura; Kenji Sawada; Seiichi Shin
    SICE Annual Conference, 715-718, 12 Sep. 2019, Peer-reviwed
    International conference proceedings, English
  • On the Driving State Separation and Estimation of Industrial Control System Using Machine Learning
    Ryota Hasegawa; Kenji Sawada; Kosuke Hata; Shintaro Fujita; Seiichi Shin
    SICE Annual Conference, 1040-1043, 12 Sep. 2019, Peer-reviwed
    International conference proceedings, English
  • Generic Transport Modelを用いた航空機の縦運動に関わる最悪外乱の一解析
    澤田賢治; 濱田吉郎; 福永秀樹; 新誠一
    Transactions of the Institute of Systems, Control and Information Engineers, 32, 8, 309-317, 01 Aug. 2019, Peer-reviwed
    Scientific journal, Japanese
  • Whitelisting Cyber Attack Detection according to Estimated Operational States for CPS
    Tsunato Nakai; Sachihiro Ichikawa; Nobuhiro Kobayashi; Kosuke Hata; Kenji Sawada
    INDIN'19, 2019, INDIN, -----, 23 Jul. 2019, Peer-reviwed
    International conference proceedings, English
  • グラフ列挙による風力・太陽光・蓄電池複合システムの重複グルーピング最適化
    Kengo Takeda; Kenji Sawada; Shinji Yokogawa; Seiichi Shin
    IEEJ Transactions on Electronics, Information and Systems, IEEJ, 139, 7, 786-795, 01 Jul. 2019, Peer-reviwed
    Scientific journal, Japanese
  • Control Flow Verification for Program Safety Update
    Takamitsu Kishida; Kenji Sawada; Seiichi Shin
    The 11th Asian Control Conference 2017, 1380-1385, 12 Jun. 2019, Peer-reviwed
    International conference proceedings, English
  • Self-Triggered Optimal Control Based on Path Search Algorithm
    Yoshiki Nagatani; Kenji Sawada; Seiichi Shin
    SICE Journal of Control, Measurement, and System Integration, SICE, 12, 03, 85-93, 01 May 2019, Peer-reviwed
    Scientific journal, English
  • Energy balance based Verification for Model Based Development
    Kenji Sawada; Mamoru Sakura; Osamu Kaneko; Seiichi Shin; Isao Matsuda; Toru Murakami
    the 13th International Modelica Conference, 207-212, 05 Mar. 2019, Peer-reviwed
    International conference proceedings, English
  • 分散協調制御システムに基づく迷路探索問題における通信手段と探索効率の関係
    Yukari Mochizuki; Kenji Sawada; Seiichi Shin
    Transactions of the Institute of Systems, Control and Information Engineers, 32, 3, 101-112, 01 Mar. 2019, Peer-reviwed
    Scientific journal, Japanese
  • Grouping optimization for Wind-Photovoltaic-Battery Hybrid System using graph enumeration
    Kengo Takeda; Kenji Sawada; Shinji Yokogawa; Seiichi Shin
    AROB 24th 2019, 184-189, 23 Jan. 2019, Peer-reviwed
    International conference proceedings, English
  • A path searching algorithm for the event-triggered model predictive control
    Yoshiki Nagatani; Kenji Sawada; Seiichi Shin
    AROB 24th 2019, 178-183, 23 Jan. 2019, Peer-reviwed
    International conference proceedings, English
  • On the overlapping decentralized operation for Wind-Photovoltaic-Battery Hybrid System
    Kengo Takeda; Kenji Sawada; Shinji Yokogawa; Seiichi Shin
    IEEJ Transactions on Electronics, Information and Systems, IEEJ, 138, 12, 1554-1565, 01 Dec. 2018, Peer-reviwed
    Scientific journal, Japanese
    DOI URL
  • On Experimental validation of Whitelist Auto-Generation Method for Secured Programmable Logic Controllers
    Shintaro Fujita; Kosuke Hata; Akinori Mochizuki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    IECON2018, 2385-2390, 23 Oct. 2018, Peer-reviwed
    International conference proceedings, English
  • Collaborative Model-based Fallback Control for Secured Networked Control Systems
    Kosuke Hata; Tsubasa Sasaki; Akinori Mochizuki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    IECON2018, 5963-5970, 21 Oct. 2018, Peer-reviwed
    International conference proceedings, English
  • Maximizing Traffic Flow of Automated Guided Vehicles based on Jamology and Applications
    Kenji Kumagai; Kenji Sawada; Seiichi Shin
    Advances in Mechanical Engineering, SAGE Journals, 10, 12, 1-17, 16 Oct. 2018, Peer-reviwed
    Scientific journal, English
    DOI URL
  • On the Driving State Management of Control System Using Error Correction Code
    Shigehiro Kawakami; Kenji Sawada; Seiichi Shin
    SMC2018, 2009-2014, 09 Oct. 2018, Peer-reviwed
    International conference proceedings, English
  • On the ID-Based Swarm Formation and Preservation of Self-Organizing Robots
    Tatsuyuki Tokorozuki; Yukari Mochizuki; Kenji Sawada; Seiichi Shin
    SICE Annual Conference, 1790-1792, 14 Sep. 2018, Peer-reviwed
    International conference proceedings, English
  • A Path Searching Algorithm for Optimal Control Problems of Hybrid Systems Application to a Self-Triggered Control System
    Yoshiki Nagatani; Kenji Sawada; Seiichi Shin
    SICE Annual Conference, 1183-1188, 13 Sep. 2018, Peer-reviwed
    International conference proceedings, English
  • On the Communication Message Obfuscation for Smart Homes
    Aki Shimazaki; Kenji Sawada; Seiichi Shin
    SICE Annual Conference, 249-252, 12 Sep. 2018, Peer-reviwed
    International conference proceedings, English
  • Model Based Anomaly Detection Focused on the Operating States
    Kosuke Hata; Kenji Sawada; Tsunato Nakai; Sachihiro Ichikawa; Nobuhiro Kobayashi
    SICE Annual Conference, 2018, SICE, 256-261, 12 Sep. 2018, Peer-reviwed
    International conference proceedings, English
  • Invariant Set Analysis for SISO Discrete-Time Polynomial Systems with Dynamic Quantizers
    Hiroyuki Ichihara; Kenji Sawada; Sophie Tarbouriech
    International Journal of Robust and Nonlinear Control, Wiley, 28, 17, 5495-5508, 06 Sep. 2018, Peer-reviwed
    Scientific journal, English
    DOI URL
  • Maze exploration algorithm via distributed collaborative control system considering communicable range
    Yukari Mochizuki; Kenji Sawada; Seiichi Shin
    Transactions of the Institute of Systems, Control and Information Engineers, 31, 4, 39-48, 01 Apr. 2018, Peer-reviwed
    Scientific journal, Japanese
    DOI URL
  • On Program Analysis via Kalman Decomposition for Non-stop Update of Embedded Systems
    Takamitsu KISHIDA; Kento TSUKADA; Kenji SAWADA; Seiichi SHIN
    Transactions of the Society of Instrument and Control Engineers, Society of Instrument and Control Engineers, 54, 02, 227-237, 01 Feb. 2018, Peer-reviwed
    Scientific journal, Japanese
    DOI URL
  • Model-based Anomaly Detection Method for PLC Whitelist
    Akinori Mochizuki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    AROB 23rd 2018, 790-794, 19 Jan. 2018, Peer-reviwed
    International conference proceedings, English
  • On autonomous distributed operation of LiB combined type SOFC system
    Shunsuke Kuwana; Kenji Sawada; Seiichi Shin
    AROB 23rd 2018, 809-814, 19 Jan. 2018, Peer-reviwed
    International conference proceedings, English
  • A prototype of cooperative whitelist protection for control systems considering plant life cycle
    Takahisa Saito; Shion Nasukawa; Shu Hosokawa; Makoto Kiuchi; Kenji Sawada
    AROB 23rd 2018, 800-804, 19 Jan. 2018, Peer-reviwed
    International conference proceedings, English
  • On Experimental Verification of Model Based White list for PLC Anomaly Detection
    Akinori Mochizuki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    The 11th Asian Control Conference 2017, 1766-1771, 20 Dec. 2017, Peer-reviwed
    International conference proceedings, English
  • On Software Update Analysis via Kalman Decomposition
    Takanori Kishida; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    The 11th Asian Control Conference 2017, 2496-2501, 20 Dec. 2017, Peer-reviwed
    International conference proceedings, English
  • Model based fallback control for networked control system via switched Lyapunov function
    Tsubasa Sasaki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Institute of Electronics, Information and Communication, Engineers, IEICE, E100A, 10, 2086-2094, 01 Oct. 2017, Peer-reviwed, This paper aims to propose a Fallback Control System isolated from cyber-attacks against networked control systems. The fallback control system implements maintaining functionality after an incident. Since cyber-attacks tamper with the communication contents of the networked control systems, the fallback control system is installed in a control target side. The fallback control system detects the incident without the communication contents on field network. This system detects an incident based on a bilinear observer and a switched Lyapunov function. When an incident is detected, normal operation is switched to fallback operation automatically. In this paper, a practical experiment with Ball-Sorter simulating a simple defective discriminator as a part of Factory Automation systems is shown. Assumed cyber-attacks against Ball-Sorter are Man In The Middle attack and Denial of Service attack.
    Scientific journal, English
    DOI URL
  • Analysis of relationship between self-excited oscillation and coulomb friction in spool of electro-magnetic proportional valve and design method for stabilization
    Katsuhiko SANDO; Takeshi YAMAMOTO; Kenji SAWADA
    Transactions of the JSME, Transactions of the JSME (in Japanese), 83, 852, p. 16-00553---, 25 Aug. 2017, Peer-reviwed,

    This paper describes self-excited oscillation caused by coulomb friction of electromagnetic proportional valve. Especially, this research focuses on a hydraulic system in which electromagnetic proportional and pressure proportional valves are located tandem. In the system, the coulomb frictional force effects on the displacement direction of the spool of the former valve and the piston is established in the downstream region of the latter valve. Each valve is stable, but, the connection of them causes instability. This paper analyzes the mechanism of this unstable vibration and then investigates an anti-vibration design method. In analysis, this paper clarifies that the vibration is caused by an elastic deformation delay of the oil in the piston. This delay increases the phase delay of the spool due to the coulomb frictional force. After replacing the coulomb frictional force with hysteresis, the proposed method uses the describing function method to express phase delay phenomenon due to the coulomb frictional force. The describing function is the complex function which expresses an amplitude ratio and phase difference with the input and output of nonlinear element. The delay of a vibration factor is linearized by converting coulomb friction into hysteresis. The effectiveness of the proposed method is demonstrated via practical experiment and non-linear simulation results.


    Scientific journal, Japanese
    DOI URL
  • Fallback and Recovery Control System of Industrial Control System for Cybersecurity
    Tsubasa Sasaki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    IFAC World Congress 2017, 15812-15817, 14 Jul. 2017, Peer-reviwed
    International conference proceedings, English
  • Fallback and Recovery Control System of Industrial Control System for Cybersecurity
    Tsubasa Sasaki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    IFAC-PapersOnLine, Elsevier B.V., 50, 1, 15247-15252, 01 Jul. 2017, Peer-reviwed, This paper focuses on the Fallback Control System (FCS), which is an emergency response method of networked Industrial Control System (ICS) as a countermeasure for cyber-attacks. The FCS is disposed on not networked controllers but controlled objects. After some incidents happen, the FCS isolates the controlled objects from networked controllers and controls the objects safely and locally. This ICS operation switching is one-way from normal one to fallback one and the recovery switching from the fallback one to the normal one still remains open. This is because there is a possibility of cyber-attacks aiming the reconnection of the controlled objects with the network controllers. Motivated by this, this paper proposes a Fallback and Recovery Control System (FRCS) by adding a safety recovery switching to the FCS. Maintaining the fallback control of the controlled object, the virtual operation mode of FRCS connects the networked controller with the virtual controlled object (Plant Simulator). The FRCS evaluates the ICS soundness from the responses between the controller and the virtual object and then reconnects the controller with the actual one. The ICS soundness evaluation is based on the discrete-event system observer. This paper verifies the validity of the proposed recovery switching via a practical experiment.
    Scientific journal, English
    DOI URL
  • Simulation model-based optimization of brake force distribution
    Kenta Tamura; Kenji Sawada; Seiichi Shin
    Transactions of the Institute of Systems, Control and Information Engineers, 30, 5, 197-208, 01 May 2017, Peer-reviwed
    Scientific journal, Japanese
    DOI URL
  • Control of self-organizing robots with switching role: Addition of robots in the multi columns formation moving
    Yuta Ueda; Kenji Sawada; Seiichi Shin
    AROB 22th 2017, 333-337, 21 Jan. 2017, Peer-reviwed
    International conference proceedings, English
  • Model-based security incident analysis for control systems via Petri net
    Akinori Mochizuki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    AROB 22th 2017, 170-175, 19 Jan. 2017, Peer-reviwed
    International conference proceedings, English
  • Model Based Incident Detection via Field Network Information
    Tsubasa Sasaki; Akinori Mochizuki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    AROB 22th 2017, 176-181, 19 Jan. 2017, Peer-reviwed
    International conference proceedings, English
  • Implementation and verification of whitelist based anomaly detection method for control system using OpenPLC
    Fujita Shintaro; Hata Kosuke; Mochizuki Akinori; Sawada Kenji; Shin Seiichi; Hosokawa Shu
    Proceedings of the Japan Joint Automatic Control Conference, The Japan Joint Automatic Control Conference, 60, 132-135, 2017
    Japanese
    DOI URL
  • Maximum Transportation Throughput of Automated Guided Vehicle System by use of Models of Traffic Capacity and Traffic Capacity Consumption
    Kenji Kumagai; Kenji Sawada; Seiichi Shin
    2017 SICE INTERNATIONAL SYMPOSIUM ON CONTROL SYSTEMS (SICE ISCS), IEEE, 67-74, 2017, Peer-reviwed, This paper obtains a theoretical value of the maximum transportation throughput of Automated Guided Vehicle (AGV) System in a logistics center. To know the maximum transportation throughput is important to design the system since we need to know the feasibility of the design. It is proposed that the method which the problem to obtain the maximum transportation throughput is reduced to a linear programming problem with in this paper. This method must enable to obtain the theoretical values of large systems in shorter period of time than previous methods. We modeled that a rail have a traffic capacity, and AGVs consume the traffic capacity when they run or wait for loading or unloading. Then these relationship is used as constraints of a linear programming problem whose objective is to maximize the transportation throughput.
    International conference proceedings, English
  • Model-based Cybersecurity for Control Systems: Modeling, Design and Control
    Kenji Sawada
    2017 56TH ANNUAL CONFERENCE OF THE SOCIETY OF INSTRUMENT AND CONTROL ENGINEERS OF JAPAN (SICE), IEEE, 724-727, 2017, Peer-reviwed, Control systems of critical infrastructures are not able to avoid dealing with some security incidents caused by cyberattacks, such as malware infection and information. It is insufficient to apply existing information security countermeasures to control systems and then we need security concept specific to control systems because there exists gaps between information and control system security policies. Also, the existing studies tend to focus on the preliminary countermeasures of cyberattacks, but it is necessary to consider incident responses of control systems during the cyberattacks in terms of control system security stategy "Defence-in-depth". Motivated by this, paper focuses on model-based techniques which are familiar with control systems. Further, we present a fallback control method as an incident response of control systems which is a minimal operation devoting control systems to facilities protection and minimizes the damage caused by cyberattack.
    International conference proceedings, English
  • Rule Based Fallback Control System via Kalman Decomposition
    T. Sasaki; K. Tsukada; K. Sawada; S. Shin; S. Hosokawa
    ISA PCS, -----, 10 Nov. 2016, Peer-reviwed
    International conference proceedings, English
  • Dynamic Quantizer Design Under Communication Rate Constraints
    Hiroshi Okajima; Kenji Sawada; Nobutomo Matsunaga
    IEEE TRANSACTIONS ON AUTOMATIC CONTROL, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 61, 10, 3190-3196, Oct. 2016, Peer-reviwed, Feedback type dynamic quantizers such as delta-sigma modulators are typically effective for encoding high-resolution data into lower resolution data. The dynamic quantizers include a filter and a static quantizer. When it is required to control under a communication rate constraint, the data rate of the quantizer output should be minimized appropriately by quantization. This technical note provides numerical methods for the complete design of a type of dynamic quantizers, including the selection of all the quantizer parameters in order tominimize a specific performance index and satisfy a communication constraint. The design method of the dynamic quantizer is proposed using a particle swarm optimization (PSO) method. A part of the initial quantizers in PSO are designed based on an invariant set analysis and an iteration algorithm. Effectiveness of the system with the proposed quantizer is assessed through numerical examples.
    Scientific journal, English
    DOI URL
  • Multiple Agents Maze Exploration with Deadlock Avoidance
    Yukari Mochizuki; Kenji Sawada; Seiichi Shin
    SICE Annual Conference, 1741-1744, 23 Sep. 2016, Peer-reviwed
    International conference proceedings, English
  • Brake force distribution optimization using simultaneous perturbation stochastic approximation
    Kenta Tamura; Kenji Sawada; Seiichi Shin
    SICE Annual Conference, -----, 23 Sep. 2016, Peer-reviwed
    International conference proceedings, English
  • A Toolchain on Model Checking SPIN via Kalman Decomposition for Control Systems Software
    Kento Tsukada; Kenji Sawada; Seiichi Shin
    2016 IEEE International Conference on Automation Science and Engineering (CASE), 300-305, 22 Aug. 2016, Peer-reviwed
    International conference proceedings, English
  • On the output feedback control of discrete-valued input systems
    Kenji Sawada; Seiichi Shin
    ECTI Transactions on Computer and Information Technology (ECTI-CIT), ECTI, 8, 2, 161-173, 01 Apr. 2016, Peer-reviwed, This paper considers an output feedback control for quantized feedback systems. Our controller focuses on high accuracy control performance for embedded devices with low-resolution AD/DA converters and networked systems with band-limited channels. The synthesis problem we address is the simultaneous synthesis of the nominal controller and the delta-sigma modulator (where the modulators are called the dynamic quantizers). For certain systems, we provide closed form and numerical solutions for the synthesis problem based on the invariant set analysis and the LMI technique. First, this paper proposes a synthesis condition that is recast as a set of matrix inequality conditions. The condition reduces to a tractable numerical optimization problem. Second, a closed form solution of optimal controller for the quantized feedback system is clarified within the invariant set framework. Third, we discuss the controller synthesis conditions which are characterized by the transmission zero property. Finally, to verify the validity of our method, numerical examples are presented and then the contributions related to the existing dynamic quantizer synthesis are clarified.
    Scientific journal, English
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    DOI URL
  • Model Predictive Control for Dispatching and Conflict-free Routing Problems based on Model Reformulation
    Kenji Sawada; Ryosuke Nakamura; Seiichi Shin
    SICE International Conference on Control Systems, SY0003/16/0000-0878---, 09 Mar. 2016, Peer-reviwed
    International conference proceedings, English
  • Analysis of Relationship between Self-excited Oscillation and Coulomb Friction in Electromagnetic Proportional valve
    SANDO Katsuhiko; YAMAMOTO Takeshi; SAWADA Kenji
    The Proceedings of Mechanical Engineering Congress, Japan, The Japan Society of Mechanical Engineers, 2016, J0910404, 2016, This paper describes self-excited oscillation caused by coulomb friction of electromagnetic proportion valve. Especially, we focus on a hydraulic system in which electromagnetic proportion and pressure proportion valves are located tandemly. In the system, the coulomb frictional force effects on the displacement direction of the spool of the former valve and the piston is established in the downstream region of the latter valve. Each valve is stable, but, the connection of them causes instability. In this study, we analyze the mechanism of this unstable vibration and then investigate an anti-vibration design method. In analysis, this paper clarifies that the vibration is caused by an elastic deformation delay of the oil in the piston. This delay increases the phase delay of the spool due to the coulomb frictional force. In the design method, we use the describing function method to express phase delay phenomenon due to the coulomb frictional force. The effectiveness of this design method is demonstrated via practical experiment and non-linear simulation results.
    Japanese
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  • Control of self-organizing robots with switching role: Multi columns formation moving
    Yuta Ueda; Kenji Sawada; Seiichi Shin
    AROB 21th 2016, 207-210, Jan. 2016, Peer-reviwed
    International conference proceedings, English
  • Hybrid vehicles design based on simultaneous perturbation optimization
    Kentaro Miyamoto; Kenji Sawada; Seiichi Shin
    AROB 21th 2016, 138-141, Jan. 2016, Peer-reviwed
    International conference proceedings, English
  • Experimental Validation of Encrypted Controller Implemented on Raspberry Pi
    Kazuto Ishikawa; Kazuya Nagasawa; Kiminao Kogiso; Kenji Sawada
    PROCEEDINGS OF 2016 IEEE 4TH INTERNATIONAL CONFERENCE ON CYBER-PHYSICAL SYSTEMS, NETWORKS, AND APPLICATIONS (CPSNA), IEEE, 1-6, 2016, Peer-reviwed, This study validates an encrypted controller using a practical networked control system implemented on Raspberry Pi with a dc motor. The encrypted controller is able to conceal not only the signals over communication links in the control systems but also the controller parameters. Experimental validation confirms that the signals and parameters inside the controller are concealed and that the processing related to the encrypted controller is done in realtime.
    International conference proceedings, English
    DOI URL
  • Maximum Traffic Flow of Automated Guided Vehicle Based on Jamology
    Kenji Kumagai; Seiichi Shin; Kenji Sawada
    International Conference on Mechatronics Technology (ICMT), B01-Paper13, 27 Nov. 2015, Peer-reviwed
    International conference proceedings, English
  • Studies on Software Model Checking via Kalman Decomposition
    Kento Tsukada; Kenji Sawada; Seiichi Shin
    The 2015 CACS International Automatic Control Conference, 227-232, 18 Nov. 2015, Peer-reviwed
    International conference proceedings, English
  • Formation control of Self-Organizing robots with switching role
    Yuta Ueda; Kenji Sawada; Seiichi Shin
    International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM), 418-419, 30 Oct. 2015, Peer-reviwed
    International conference proceedings, English
  • Model reformulation for conflict-free routing problems using Petri Net and Deterministic Finite Automaton
    Ryosuke Nakamura; Kenji Sawada; Seiichi Shin; Kenji Kumagai; Hisato Yoneda
    Artificial Life and Robotics, Springer Tokyo, 20, 3, 262-269, 03 Oct. 2015, Peer-reviwed, It is well known that routing problems are recast as a binary integer linear programming in overhead hoist transport (OHT) vehicle systems. Two kinds of discrete-time state space models of the routing problem are proposed in this paper that simplifies the constraints and binary variables. First, a Petri Net (PN) method is used to simplify the constraints. Second, a Deterministic Finite (DF) Automaton method is used for reducing the binary inputs of the state space equation in OHT systems. Finally, some numerical examples are shown to verify the validity of the proposed methods.
    Scientific journal, English
    DOI URL
  • Real machine verification of task scheduling method in distributed processing
    Hitoshi Yamazaki; Katumi Konishi; Kenji Sawada; Seiichi Shin
    SICE Annual Conference, 446-469, Jul. 2015, Peer-reviwed
    International conference proceedings, English
  • Energy balance based verification for hybrid vehicle models
    Kentaro Miyamoto; Kenji Sawada; Seiichi Shin
    2015 ASEAN-UEC Symposium, 14-19, 22 Jun. 2015
    Symposium, English
  • Free-viewpoint Video Synthesis from a Movable 2D Cammera Array
    Shunsuke Yamada; Keita Takahashi; Kenji Sawada; Mehrdad Panahpour Tehrani; Toshiaki Fujii
    The 1st International Conference on Advanced Imaging (ICAI), 312-315, 17 Jun. 2015, Peer-reviwed
    International conference proceedings, English
  • On the discrete-time modeling for efficient OHT scheduling
    R. Nakamura; K. Sawada; S. Shin; K. Kumagai; H. Yoneda
    AROB 20th 2015, 176-181, Jan. 2015, Peer-reviwed
    International conference proceedings, English
  • Invariant Set Analysis for Discrete-Time Polynomial Nonlinear Feedback Systems with Dynamic Quantizers
    Hiroyuki Ichihara; Kenji Sawada
    2015 10TH ASIAN CONTROL CONFERENCE (ASCC), IEEE, 1698-1703, 2015, Peer-reviwed, This paper deals with invariant set analysis for discrete-time polynomial nonlinear feedback single input and single output systems with dynamic quantizers where the control input signal takes discrete values. The paper starts with invariant set analysis for discrete-time polynomial nonlinear systems with bounded disturbances. Since the quantization error is also bounded, analysis of feedback systems including the dynamic quantizers can be reduced to invariant set analysis. Some sufficient conditions for analysis are obtained that can be solved by numerical optimization. Examples illustrate upper bounds of a cost function based on the proposed analysis method.
    International conference proceedings, English
  • A Fallback Control Study of Networked Control Systems for Cybersecurity
    Kenji Sawada; Tsubasa Sasaki; Seiichi Shin; Shu Hosokawa
    2015 10TH ASIAN CONTROL CONFERENCE (ASCC), IEEE, 89-94, 2015, Peer-reviwed, Recent control systems of critical infrastructures are networked systems, which are exposed to the infection of the computer malwares. This paper considers a cybersecurity technology of networked control systems in terms of availability. Architecture of fallback control is proposed, which consists of the remote controller and the local controller. The former achieves the high control performance and the latter guarantees the minimum required control performance. If the malicious behavior of the remote controller is detected by the local controller, the local controller breaks the network communication between the plant and the remote controller and takes over the plant control. This framework aims to prevent the spread of the damage caused by the infection of the computer malwares. As a first step of the research, a prototype fallback control system is applied to a simple automation system simulating the defective discriminator.
    International conference proceedings, English
  • Security Enhancements of Networked Control Systems Using RSA Public-Key Cryptosystem
    Takahiro Fajita; Kiminao Kogiso; Kenji Sawada; Seiichi Shin
    2015 10TH ASIAN CONTROL CONFERENCE (ASCC), IEEE, 2653-2658, 2015, Peer-reviwed, To enhance the security of networked control systems, we propose the concept of secured control rules that is defined as a method that achieves concealing both signals over communication channels and parameters within controllers. Our method proposed in this study uses the homomorphism of the RSA cryptosystem to determine control signals directly from encrypted feedback signals and control parameters without performing any decryption processes. A numerical simulation confirms that the proposed method contributes to the improvement of security.
    International conference proceedings, English
  • Reduced-order dynamic quantizer synthesis for discrete-valued input systems
    Kenji Sawada; Seiichi Shin
    2015 12TH INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING/ELECTRONICS, COMPUTER, TELECOMMUNICATIONS AND INFORMATION TECHNOLOGY (ECTI-CON), IEEE, No. 1294--, 2015, Peer-reviwed, This paper considers reduced-order dynamic quantizer synthesis for discrete-valued input systems. Our approach is based on the ellipsoidal invariant set analysis and the slack variable approach of linear matrix inequality. We consider the tractable numerical design, which covers the full-order design result of the current authors. In the numerical examples, the effectiveness of the slack variable is discussed for the quantizer design.
    International conference proceedings, English
  • Sampled-data model following control for discrete-valued input systems via improved matrix uncertainty approach
    Kenji Sawada; Seiichi Shin
    2015 EUROPEAN CONTROL CONFERENCE (ECC), IEEE, 1657-1662, 2015, Peer-reviwed, This paper considers a sampled-data model follow ing control for continuous-time discrete-valued input systems. A synthesis condition is recast as a set of matrix inequalities via the matrix uncertainty approach, while the quantized accuracy and the switching speed of discretizing the continuous-valued signal are considered simultaneously. To reduce the comer votiveness of the synthesis condition, the improved approach dividing the region of the switching intervals is also proposed.
    International conference proceedings, English
  • Security Enhancements of Networked Control Systems Using RSA Public-Key Cryptosystem
    Takahiro Fajita; Kiminao Kogiso; Kenji Sawada; Seiichi Shin
    2015 10TH ASIAN CONTROL CONFERENCE (ASCC), IEEE, 51, 09, 655-650, 2015, Peer-reviwed, To enhance the security of networked control systems, we propose the concept of secured control rules that is defined as a method that achieves concealing both signals over communication channels and parameters within controllers. Our method proposed in this study uses the homomorphism of the RSA cryptosystem to determine control signals directly from encrypted feedback signals and control parameters without performing any decryption processes. A numerical simulation confirms that the proposed method contributes to the improvement of security.
    International conference proceedings, English
    DOI URL
  • Virtual Grid for Renewable Energy Society
    Haruhisa Ichikawa; Ashir Ahmed; Hiroshi Hanafusa; Shinji Yokogawa; Yuusuke Kawakita; Kenji Sawada; Hirohide Mikami; Noriaki Yoshikawa
    2015 IEEE INNOVATIVE SMART GRID TECHNOLOGIES - ASIA (ISGT ASIA), IEEE, ---, 2015, Peer-reviwed, Emerging economies are expected to account for more than 90% of the global net-energy-demand growth to 2035. Intensive use of renewable energy by emerging economies is inevitable to solve the problem of global warming. In this paper, we propose a grid comprising distributed small solar energy systems without electric wires, called a "virtual grid," where lithium-ion batteries, solar panels, and appliances are wirelessly networked and the batteries are shared between users to improve the efficiency of battery usage. The states of health (SOH) of batteries are monitored and the batteries are used beyond the SOH deterioration limit defined by the makers as far as the batteries are evaluated as safe, which results in extension of the battery lifetime to more than twice. The virtual grid is projected to reach grid parity for emerging economies around 2030, assuming continued cost reduction of lithium-ion, or other high-energy-density batteries.
    International conference proceedings, English
  • Model Based Fallback Control for Networked Control System via Switched Lyapunov Function
    Tsubasa Sasaki; Kenji Sawada; Seiichi Shin; Shu Hosokawa
    IECON 2015 - 41ST ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, IEEE, 2000-2005, 2015, Peer-reviwed, This paper aims to propose a fallback system isolated from man-in-the-middle attack (MITM) for networked control systems. In this paper, fallback is an incident response of the control system in which facilities are preferentially protected and a minimal system operates during MITM. Since the communication contents of the networked control systems can be tampered with by MITM, the proposed system named a "fallback system" is installed in a control target side, and the fallback system detects MITM without the communication contents. This system detects MITM based on the bilinear observer and switched Lyapunov function. When MITM is detected, normal operation is switched to fallback operation automatically. As a first step of this study, a selector and a fallback unit of the fallback system are developed. A practical experiment simulating a simple defective discriminator is shown.
    International conference proceedings, English
  • Sampled-data model following output feedback control for discrete-valued input systems
    Kenji Sawada; Seiichi Shin
    2015 54TH IEEE CONFERENCE ON DECISION AND CONTROL (CDC), IEEE, 7488-7493, 2015, Peer-reviwed, This paper considers a sampled-data model following control for continuous-time discrete-valued input systems. The synthesis problem the authors address is the simultaneous synthesis of the nominal controller and the dynamic quantizers. A synthesis condition is recast as a set of matrix inequalities via the matrix uncertainty approach, while the quantized accuracy and the sampling time of discretizing the continuous-valued signal are considered simultaneously. To obtain the synthesis condition, the improved approach dividing the region of the switching intervals and the change of variable approach reducing the controller order are applied.
    International conference proceedings, English
  • Model following control for continuous-time discrete-valued input systems
    Kenji Sawada; Seiichi Shin
    Artificial Life and Robotics, 19, 3, 227-285, 08 Oct. 2014, Peer-reviwed
    Scientific journal, English
    DOI URL
  • Model following control for continuous-time discrete-valued input systems via matrix uncertainty approach
    K. Sawada; S. Shin
    SICE Annual Conference 2014, 416-419, Sep. 2014, Peer-reviwed
    International conference proceedings, English
  • 状態空間表現による自律無人搬送車のタスク割当てと経路計画の同時最適化
    中村亮介; 澤田賢治; 新誠一; 熊谷賢治; 米田尚登
    計測自動制御学会論文集, 計測自動制御学会, 50, 03, 210-218, Mar. 2014, Peer-reviwed
    Scientific journal, Japanese
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  • Task scheduling for parallel and distributed processing based on integer linear programming
    Yamazaki Hitoshi; Konishi Katsumi; Sawada Kenji; Shin Seiichi
    Proceedings of the Japan Joint Automatic Control Conference, The Japan Joint Automatic Control Conference, 57, 982-987, 2014, 本稿は並列分散処理における整数計画法に基づいたタスクスケジューリング手法を提案する．既存のタスクスケジューリング手法にはタスクの処理順序の制約や計算機間の通信時間の制約を考慮していないものがある．一方，提案手法はそれらの制約も考慮できる．本稿では簡単な動画処理に対して提案手法を適用し，数値実験と実機実験の結果を比較しながらその有効性を確認する．
    Japanese
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  • Model following control for continuous-time discrete-valued input systems
    K. Sawada; S. Shin
    AROB 19th 2014, 809-812, Jan. 2014, Peer-reviwed
    International conference proceedings, English
  • Data Processing of Hybrid Vehicle Driving using Cluster Analysis
    K. Komatsuzaki; S. Shin; K. Sawada
    AROB 19th 2014, 789-792, Jan. 2014, Peer-reviwed
    International conference proceedings, English
  • Air-conditioner adaptation for indoor environmental change via summational type adaptive observer
    R. Yanagawa; K. Sawada; S. Shin
    AROB 19th 2014, 793-796, Jan. 2014, Peer-reviwed
    International conference proceedings, English
  • Model following output feedback controller synthesis for discrete-valued input systems
    Kenji Sawada; Seiichi Shin
    2014 IEEE 13TH INTERNATIONAL WORKSHOP ON ADVANCED MOTION CONTROL (AMC), IEEE, 104-109, 2014, Peer-reviwed, This paper considers an output feedback control for discrete-valued input systems. Our controller achieves model following control for networked control systems and embedded devices with low-resolution AD/DA converters. The synthesis problem we address is the simultaneous synthesis of the nominal controller and the delta-sigma modulator (where the modulators are called the dynamic quantizers). Our approach is based on the invariant set analysis and the LMI technique. First, this paper considers a controller structure for model following control. Second, this paper proposes a controller analysis condition for quantized feedback systems. Third, we provide a simultaneous synthesis condition that is recast as a set of matrix inequalities.
    International conference proceedings, English
  • On the idle time control for multistep scheduling algorithm in parallel and distributed processing
    Hitoshi Yamazaki; Katsumi Konishi; Kenji Sawada; Seiichi Shin
    2014 11TH INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING/ELECTRONICS, COMPUTER, TELECOMMUNICATIONS AND INFORMATION TECHNOLOGY (ECTI-CON), IEEE, ---, 2014, Invited, This paper considers a task scheduling problem in heterogeneous systems of processors and proposes a multistep scheduling algorithm for the problem. There are two important points for task scheduling problem. First, it is necessarily to consider optimality. Second, it is necessarily to reduce scheduling time which is calculation time for the problem. For first point, idle time and communication costs among processors are very important factors. Idle time is time which a processor does not work. Then, this paper proposes a multistep scheduling algorithm considered idle time and communication costs.
    International conference proceedings, English
  • On the idle time control for multistep scheduling algorithm in parallel and distributed processing
    Hitoshi Yamazaki; Katsumi Konishi; Kenji Sawada; Seiichi Shin
    2014 11TH INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING/ELECTRONICS, COMPUTER, TELECOMMUNICATIONS AND INFORMATION TECHNOLOGY (ECTI-CON), IEEE, Paper ID: 1316--, 2014, Peer-reviwed, This paper considers a task scheduling problem in heterogeneous systems of processors and proposes a multistep scheduling algorithm for the problem. There are two important points for task scheduling problem. First, it is necessarily to consider optimality. Second, it is necessarily to reduce scheduling time which is calculation time for the problem. For first point, idle time and communication costs among processors are very important factors. Idle time is time which a processor does not work. Then, this paper proposes a multistep scheduling algorithm considered idle time and communication costs.
    International conference proceedings, English
  • Output feedback controller synthesis for continuous-time discrete-valued input systems: Model following control case
    Kenji Sawada; Seiichi Shin
    2014 EUROPEAN CONTROL CONFERENCE (ECC), IEEE, 2697-2702, 2014, Peer-reviwed, This paper considers output feedback control for continuous-time discrete-valued input systems. Our controller achieves model following control for networked control systems and embedded devices with low-resolution AD/DA converters. The synthesis problem we address is simultaneous synthesis of a nominal controller and a delta-sigma modulator (the modulator is called a dynamic quantizer). Our approach is based on the invariant set analysis and the LMI technique. First, this paper considers a controller structure for the model following control. Second, this paper proposes controller analysis and simultaneous synthesis conditions that are recast as a set of matrix inequalities respectively. Third, this paper presents analysis conditions of the applicable interval of switching process based on the BIBO stability. In particular, we discuss the condition in terms of discrete-time Lyapunov stability and continuous-time Lyapunov-Krasovskii functional.
    International conference proceedings, English
  • Model following output feedback controller synthesis for discrete-valued input systems
    Kenji Sawada; Seiichi Shin
    2014 IEEE 13TH INTERNATIONAL WORKSHOP ON ADVANCED MOTION CONTROL (AMC), IEEE, 07, 04, 246-253, 2014, Peer-reviwed, This paper considers an output feedback control for discrete-valued input systems. Our controller achieves model following control for networked control systems and embedded devices with low-resolution AD/DA converters. The synthesis problem we address is the simultaneous synthesis of the nominal controller and the delta-sigma modulator (where the modulators are called the dynamic quantizers). Our approach is based on the invariant set analysis and the LMI technique. First, this paper considers a controller structure for model following control. Second, this paper proposes a controller analysis condition for quantized feedback systems. Third, we provide a simultaneous synthesis condition that is recast as a set of matrix inequalities.
    International conference proceedings, English
    DOI URL
  • On the Adaptive Observer for Summational Type State Space Equations
    Kenji Sawada; Ryo Yanagawa; Seiichi Shin
    2014 INTERNATIONAL CONFERENCE ON ADVANCED MECHATRONIC SYSTEMS (ICAMECHS), IEEE, 67-72, 2014, Peer-reviwed, This paper considers an adaptive observer construction for summational type state space (StSS) equation, which is a suitable mathematical expression for modeling physical dynamical systems with parasitic elements. Although this expression is appropriate to the realities of physical and engineering problems in terms of the system identification and the control system design, to our knowledge, little is known about the StSS identification methods except the MOESP based method. So, we propose a StSS adaptive observer method, which is based on Kreisselmeier adaptive observer.
    International conference proceedings, English
  • A smartphone centered system for home appliances
    Wataru Toriumi; Seiichi Shin; Kenji Sawada
    IECON 2014 - 40TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, IEEE, 3988-3992, 2014, Peer-reviwed, This paper proposes a smartphone centered system where home appliances cooperate with each other. This system realizes convenience of a consumer as low cost and high secure environment by Near Field Communication (NFC) and a Cloud Server consists of Social Networking Service (SNS) and a Virtual Server (VS). Moreover, Verbal Communication (VC) through the smartphone is added for usability. A cooking application is presented in order to show a detail and validity of the proposed system.
    International conference proceedings, English
  • Dispatching and Conflict-free Routing based on Model Predictive Control in Semiconductor Fab
    Ryosuke Nakamura; Kenji Sawada; Seiichi Shin; Kenji Kumagai; Hisato Yoneda
    2014 CACS INTERNATIONAL AUTOMATIC CONTROL CONFERENCE (CACS 2014), IEEE, 254-259, 2014, Peer-reviwed, This paper proposes a new scheduling method of dispatching and conflict-free routing for overhead hoist transport (OHT) systems in semiconductor fabrication (Fab). This paper utilizes a model predictive control (MPC) strategy in which the cycle of measurement, prediction, optimization and control is repeated. The first aim of the MPC application is to set a small prediction horizon for the scheduling optimization, which leads to reduce computational complexity. The second aim is to address the dynamic situation such that transport requests are given in real time. This paper introduces a switching type multi-objective cost function and considers how the MPC based method adds new request tasks to the scheduling problem in real-time for the dynamic situation. To verify the validity of the proposed method, some numerical examples are shown.
    International conference proceedings, English
  • Energy balance based verification for hybrid vehicle models
    Kentaro Miyamoto; Kenji Sawada; Seiichi Shin
    2014 CACS INTERNATIONAL AUTOMATIC CONTROL CONFERENCE (CACS 2014), IEEE, 45-50, 2014, Peer-reviwed, Recently, automobile industry requires energy saving technology for reducing the environment burden and operational costs. Hybrid engines are environmental friendly, but hybrid heavy-duty trucks have not been still sold in the Japanese market, as their development has posed considerable problems. To solve these problems, the automobile industry has begun to develop simulation models of actual vehicles. Nevertheless, at the moment, the simulators are still unreliable and the developers cannot obtain accurate results. Compared to automobiles with combustion engines, the recent hybridization complicates the verification of the simulation results, because a hybrid vehicle is a complex system composed of mechanical systems, electric systems, control units and so on. Motivated by this, this paper shows a new verification method which focuses on the energy balance between the various components. Since the energy conservation law holds for both the mechanical systems and the electric systems, our proposed method allows us to verify complex models like hybrid vehicles. In this paper, a mathematical model for a hybrid heavy-duty truck is developed and the approach based on energy balance is verified.
    International conference proceedings, English
  • Simultaneous Optimization of Dispatching and Routing for OHT Systems via Hybrid System Modeling
    Ryosuke Nakamura; Kenji Sawada; Seiichi Shin; Kenji Kumagai; Hisato Yoneda
    IECON2013, 4414-4419, Nov. 2013, Peer-reviwed
    International conference proceedings, English
  • On the Numerical Optimization Design of Continuous-Time Quantizer: A Matrix Uncertainty Approah
    K. Sawada; S. Shin
    European Control Conference 2013, 4532-4537, Aug. 2013, Peer-reviwed
    International conference proceedings, English
  • Dynamic quantizer design for MIMO systems based on communication rate constraint
    Hiroshi Okajima; Kenji Sawada; Nobutomo Matsunaga; Yuki Minami
    Electronics and Communications in Japan, 96, 5, 28-36, May 2013, Peer-reviwed, This paper proposes a design method for dynamic quantizers in a MIMO networked control system. It is well known that feedback-type dynamic quantizers are effective for the quantization of data series in the sense of noise shaping. The dynamic quantizers include a set of a dynamic filter and a static quantizer. When it is required to use the quantizer in network communication, the data size of the signal should be minimized appropriately by the quantizers. We have proposed a design method for dynamic quantizers in a SISO system based on the communication rate constraint. In this paper, the design method is extended to MIMO systems. Using this extension, the communication rate constraint for one type of concentrated system can be handled. In the setting of the quantizer for a MIMO system, bit assignment is an important matter for the appropriate design of information flow. The effectiveness of the proposed design method is shown using numerical examples. © 2013 Wiley Periodicals, Inc.
    Scientific journal, English
    DOI URL
  • 半導体搬送用台車の連続時間ロバスト有限時間整定制御
    澤田賢治; 井川達也; 新誠一; 熊谷賢治; 米田尚登
    計測自動制御学会論文集, The Society of Instrument and Control Engineers, 49, 02, 246-254, Feb. 2013, Peer-reviwed, This paper describes synthesis of continuous-time robust deadbeat control for automatic guided vehicle (AGV) in semiconductor manufacturing. Since the dynamics of AGV depends on the loading weight of semiconductor wafer, it is necessary to consider control synthesis which focuses on the change of the loading weight for high-accuracy positioning. In addition to this, the big overshoot and the saturating servo motor current of AGV should be avoided. Motivated by above, first, this paper provides the modeling of AGV. Second, this paper describes robust deadbeat control designs. We discuss the design of the cascade control system which is composed of the servo controller and the deadbeat one. Finally, this paper examines the effectiveness of the proposed systems through numerical examples.
    Scientific journal, Japanese
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  • Simultaneous Optimization of Dispatching and Routing for OHT Systems via Hybrid System Modeling
    Ryosuke Nakamura; Kenji Sawada; Seiichi Shin; Kenji Kumagai; Hisato Yoneda
    39TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2013), IEEE, 4416-4421, 2013, Peer-reviwed, This paper proposes a new static simultaneous optimization of dispatching and conflict-free routing for unidirectional Overhead Hoist Transport (OHT) systems. Our objective is to minimize the entire transportation time where the given transportation tasks are finished. A hybrid system modeling is applied for OHT system that is constituted by the OHT vehicles at the lower level and governed by the upper level scheduler. In the proposed modeling, it is clarified that the simultaneous optimization problems are recast as a binary integer linear problem by using model predictive control. This paper presents a numerical example and discusses limitation of proposed modeling.
    International conference proceedings, English
  • Optimal scheduling of automatic guided vehicle transportation system based on MLD system modeling
    Kenji Sawada; Seiichi Shin
    PROCEEDINGS OF THE EIGHTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 18TH '13), ALIFE ROBOTICS CO, LTD, 138-141, 2013, Peer-reviwed, This paper proposes an optimal scheduling method of transportation systems in semiconductor manufacturing within MLD (mixed logical dynamical) modeling framework. We consider an optimal scheduling problem of AGV (automatic guided vehicle) system transfer problem, which is to control the AGV congestion around the meeting points and the dividing points of the transportation road in this paper. The problem is recast as an ILP (Integer Linear Programming) problem within model predictive control framework.
    International conference proceedings, English
  • Synthesis of continuous-time dynamic quantizers for LFT type quantized feedback systems
    Kenji Sawada; Seiichi Shin
    PROCEEDINGS OF THE EIGHTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 18TH '13), ALIFE ROBOTICS CO, LTD, 134-137, 2013, Peer-reviwed, This paper focuses on analysis and synthesis methods of continuous-time dynamic quantizers for LFT type quantized feedback systems. Our aim is to find multiple (decentralized) quantizers such that a given linear system is optimally approximated by the given linear system with the quantizer in terms of invariant set analysis. In the case of minimum phase systems, this paper clarifies that optimal dynamic quantizers and its performance are parameterized by a design parameter. Also, an analytical relation between the static and dynamic quantizers will be presented.
    International conference proceedings, English
  • On the output feedback control of discrete-valued input systems
    Kenji Sawada; Seiichi Shin
    2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2013, May 16th, 2013, Peer-reviwed, This paper considers an output feedback control for quantized feedback systems. Our controller provides high accuracy control performance for embedded devices with low-resolution AD/DA converters. For a certain system, we provide closed form and numerical solutions for the synthesis problem. The synthesis problem we address is the simultaneous synthesis of the nominal controller and the delta-sigma modulator (where the modulators are called the dynamic quantizers). Our approach is based on the invariant set analysis and the LMI technique. First, this paper proposes a synthesis condition that is recast as a set of matrix inequality condition. The condition reduces to a tractable numerical optimization problem. Second, a closed form solution of an optimal controller for the quantized feedback system is clarified within the invariant set framework. Finally, we discuss the controller synthesis conditions which are characterized by the transmission zero property. © 2013 IEEE.
    International conference proceedings, English
    DOI URL
  • Optimal scheduling of automatic guided vehicle system via state space realization
    Kenji Sawada; Seiichi Shin; Kenji Kumagai; Hisato Yoneda
    International Journal of Automation Technology, Fuji Technology Press, 7, 5, 571-580, 2013, Peer-reviwed, This paper considers dynamical system modeling of transportation systems in semiconductor manufacturing based on state space realization. Utilizing this method, we consider an optimal scheduling problem for an Automatic Guided Vehicle (AGV) transfer problem, which is to control AGV congestion at transport rail junctions. Our scheduling algorithm is based on model-predictive control in which the cycle of measurement, prediction and optimization is repeated. Its optimization is recast as an Integer Linear Programming (ILP) problem. Since little attention has been given to AGV scheduling based on model-predictive control, no method is, to our knowledge, known for determining appropriate cost functions. Here, we focus on throughput maximization and shortest transit time problems and show corresponding cost function settings. We also propose a visualization algorithm of AGV scheduling via state space realization, presenting numerical examples.
    Scientific journal, English
    DOI URL
  • Synthesis of continuous-time dynamic quantizers for LFT type quantized feedback systems
    Kenji Sawada; Seiichi Shin
    PROCEEDINGS OF THE EIGHTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 18TH '13), ALIFE ROBOTICS CO, LTD, 18, 1, 134-137, 2013, Peer-reviwed, This paper focuses on analysis and synthesis methods of continuous-time dynamic quantizers for LFT type quantized feedback systems. Our aim is to find multiple (decentralized) quantizers such that a given linear system is optimally approximated by the given linear system with the quantizer in terms of invariant set analysis. In the case of minimum phase systems, this paper clarifies that optimal dynamic quantizers and its performance are parameterized by a design parameter. Also, an analytical relation between the static and dynamic quantizers will be presented.
    International conference proceedings, English
    DOI URL
  • Multistep Scheduling Algorithm for Parallel and Distributed Processing in Heterogeneous Systems with Communication Costs
    Hitoshi Yamazaki; Katsumi Konishi; Seiichi Shin; Kenji Sawada
    MATHEMATICAL PROBLEMS IN ENGINEERING, HINDAWI PUBLISHING CORPORATION, 4480-4485, 2013, Peer-reviwed, We discuss a task scheduling problem in heterogeneous systems and propose a multistep scheduling algorithm to solve it. Existing scheduling algorithms formulated as 0-1 integer linear programming can be used to consider the optimality of task scheduling. However, they cannot address complicated relations among tasks or communication costs among processors. Therefore, we propose a scheduling algorithm that formulates communication costs as 0-1 integer linear programming. On the other hand, 0-1 integer linear programming takes a long time to calculate the scheduling results because it is NP-complete. Thus, scheduling time also needs to be decreased. A solution for decreasing scheduling time is a graph clustering which decomposes a large task graph into smaller subtask graphs (clusters). Also, it is important for parallel and distributed processing to find task parallelism in a task graph. Then, we also propose a clustering algorithm based on SCAN. SCAN is an algorithm for finding clusters in a network. The clustering algorithm based on SCAN can find task parallelism in a task graph. In numerical examples, we argue the following two points. First, our multistep scheduling algorithm resolves the scheduling problem in heterogeneous systems. Second, it is superior to the existing scheduling algorithms in terms of calculation time.
    Scientific journal, English
    DOI URL
  • Numerical Optimization Design of Dynamic Quantizer via Matrix Uncertainty Approach
    Kenji Sawada; Seiichi Shin
    MATHEMATICAL PROBLEMS IN ENGINEERING, HINDAWI PUBLISHING CORPORATION, 2013, Article ID 250683, 12 pages, 2013, Peer-reviwed, In networked control systems, continuous-valued signals are compressed to discrete-valued signals via quantizers and then transmitted/received through communication channels. Such quantization often degrades the control performance; a quantizer must be designed that minimizes the output difference between before and after the quantizer is inserted. In terms of the broadbandization and the robustness of the networked control systems, we consider the continuous-time quantizer design problem. In particular, this paper describes a numerical optimization method for a continuous-time dynamic quantizer considering the switching speed. Using a matrix uncertainty approach of sampled-data control, we clarify that both the temporal and spatial resolution constraints can be considered in analysis and synthesis, simultaneously. Finally, for the slow switching, we compare the proposed and the existing methods through numerical examples. From the examples, a new insight is presented for the two-step design of the existing continuous-time optimal quantizer.
    Scientific journal, English
    DOI URL
  • Multistep Scheduling Algorithm for Parallel and Distributed Processing with Communication Costs
    Hitoshi Yamazaki; Katumi Konishi; Seiichi Shin; Kenji Sawada
    39TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2013), IEEE, 2013, 4482-4487, 2013, Peer-reviwed, This paper considers a task scheduling problem for multicore CPUs and proposes a multistep scheduling algorithm. The existing scheduling algorithms formulated as 0-1 integer linear programming can consider optimality of a task scheduling. However, the existing scheduling algorithms cannot address complicated relations among tasks or cannot consider communication costs among processors. Then, first purpose is to propose a new scheduling algorithm with communication costs formulated as 0-1 integer linear programming. On the other hand, 0-1 integer linear programming is NP-complete and it takes long time to calculate scheduling result. Then, the second purpose is to decrease scheduling time. A solution decreasing scheduling time is a graph clustering which decomposes a large task graph into smaller sub-task graph (cluster). Also, it is important for parallel and distributed processing to find task parallelism in a task graph. Then, this paper proposes a clustering algorithm based on SCAN which is an algorithm for finding clusters in a network. The proposed algorithm can find task parallelism in a task graph. In numerical examples, the multistep scheduling algorithm is superior to the existing scheduling algorithm in terms of calculation time.
    International conference proceedings, English
    DOI URL
  • Air-conditioner adaptation for environment change indoors via constant-trace algorithm
    R. Yanagawa; K. Sawada; S. Shin
    IWMST2012, 357-360, Aug. 2012, Peer-reviwed
    International conference proceedings, English
  • On the Charging and discharging cycle design for HV batteries evaluation
    K. Komatsuzaki; K. Sawada; S. Shin
    IWMST2012, 361-365, Aug. 2012, Peer-reviwed
    International conference proceedings, English
  • 通信容量制約を満足する動的量子化器の出力可到達領域に基づいた性能改善
    岡島寛; 澤田賢治; 海部静; 松永信智
    計測自動制御学会論文集, The Society of Instrument and Control Engineers, 48, 6, 359-361, Jun. 2012, Peer-reviwed, This paper aims at design of network control system for the remote control of robot. As the system includes a communication channel, quantization is required to satisfy communication capacity limitation. Dynamic quantizer is a kind of quantization methods and has been studied in control engineering field. Optimal quantizing width designed of dynamic has been designed based on invariant sets. However, quantizing width of dynamic quantizer designed based on invariant sets has maintainability than one of designed based on reachable sets and big maintainability and poor control performance. We need to design quantizing width of dynamic quantizer based on reachable sets. In this study, we propose design method of quantizing width of dynamic quantizer based on reachable sets. The effectiveness is shown by numerical example.
    Scientific journal, Japanese
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  • Synthesis of continuous-time dynamic quantizers for quantized feedback systems
    Kenji Sawada; Seiichi Shin
    IFAC Proceedings Volumes (IFAC-PapersOnline), IFAC Secretariat, 45, 9, 248-253, 2012, Peer-reviwed, This paper focuses on analysis and synthesis methods of continuous-time dynamic quantizers for quantized feedback systems. Our aim is to find a quantizer such that a given linear system is optimally approximated by the given linear system with the quantizer in terms of invariant set analysis. In the case of minimum phase systems, this paper clarifies that an optimal dynamic quantizer and its performance are parameterized by a design parameter. Otherwise, this paper derives the stable quantizer synthesis condition that can be recast as parameter dependent linear matrix inequalities. © 2012 IFAC.
    International conference proceedings, English
    DOI URL
  • On numerical optimization design of continuous-time feedback type quantizer for networked control systems
    Kenji Sawada; Seiichi Shin
    IEEE International Conference on Automation Science and Engineering, 1144-1149, 2012, Peer-reviwed, This paper focuses on analysis and synthesis methods of continuous-time dynamic quantizers for networked control systems. Our aim is to propose a numerical optimization design method of multiple (decentralized) quantizers such that a given linear system is optimally approximated by the given linear system with the multiple quantizers. Our method is based on the invariant set analysis and the LMI technique. Also, we clarify that our proposed method naturally extends to multiobjective control problems. Finally, it is pointed out that the proposed method is helpful through a numerical example. © 2012 IEEE.
    International conference proceedings, English
    DOI URL
  • On the adaptation of the air-conditioner to the indoor environment using the Constant-Trace Algorithm
    Ryo Yanagawa; Kenji Sawada; Seiichi Shin
    2012 12TH INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION AND SYSTEMS (ICCAS), IEEE, 1328-1332, 2012, Peer-reviwed, Focusing on the air-conditioner, this paper considers the real-time model learning and the adaptation algorithm to the indoor environment, simultaneously. It is clarified that the Constant-Trace Algorithm is effective for the adaptation, which consists of the detection of disturbances (external factors to change the amount of heat in the room) and the switching between the model learning with and without the disturbances. Also, this paper estimates the perturbation of the amount of heat based on the disturbance detection. In addition, this paper validates the effectiveness of our method by experiments.
    International conference proceedings, English
  • Charging and discharging cycle design for performance evaluation of HV batteries
    Kouhei Komatsuzaki; Seiichi Shin; Kenji Sawada
    2012 12TH INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION AND SYSTEMS (ICCAS), IEEE, 224-228, 2012, Peer-reviwed, The battery greatly influences the performance of the Hybrid Vehicle (HV). So, automobile manufacturers need to evaluate the batteries of various manufacturers and select the most appropriate one. In this case, they need a charge-discharge cycle to evaluate batteries quantitatively. In this paper, we call such a cycle an evaluation pattern and propose a design method of the pattern to evaluate the HV battery quantitatively. HV employs two power sources, motor and engine. In a HV, the appropriate distribution of output torques between the motor and engine is determined based on the driving condition (vehicle speed, acceleration rate, SOC, and so on). That leads to the dependence of the charge-discharge cycle on the driving condition. Therefore, our method divides actual driving data of HV into four driving modes (stopping, acceleration, steady running and deceleration) and then selects a representative pattern for every driving mode effectively by using regression analysis. As a result, we can narrow down the actual driving data that to a few representative patterns. The evaluation pattern is designed by combining the representative patterns. In addition, the quantitative evaluation pattern can be designed in a short time.
    International conference proceedings, English
  • Dynamic quantizer design for MIMO systems based on communication rate constraint
    Kenji Sawada; Hiroshi Okajima; Nobutomo Matsunaga; Yuki Minami
    IECON2011, IEEE, 2498-2503, Nov. 2011, Peer-reviwed, This paper proposes a design method of dynamic quantizers for MIMO networked control systems. It is well known that feedback type dynamic quantizers are effective for quantization of the data series in the meaning of noise shaping. The dynamic quantizer includes a set of a dynamic filter and a static quantizer. When it is required to use the quantizer under the network communication, the data size of signal should be minimized appropriately by the quantizers. The authors have proposed a design method of the dynamic quantizers for SISO systems based on the communication rate constraint. In this paper, the design method is extended to MIMO systems. By this extention, we can handle the concentrated systems with communication rate constraint, because many concentrated systems have some controlled objectives to achieve multi-tasks. In the setting of the quantizer for MIMO system, bit assignment is important matter for appropriate design of information flow. The effectiveness of proposed design method is shown by numerical examples.
    International conference proceedings, English
  • Dynamic modeling for optimal scheduling of automatic guided vehicle system
    K. Sawada; S. Shin; K. Kumagai; H. Yoneda
    SICE annual conference, 580-583, Sep. 2011, Peer-reviwed
    International conference proceedings, English
  • 半導体搬送用台車のモデリングとキャリブレーション－フープ積載量に対するモデル精密化－
    澤田賢治; 田中香介; 新誠一; 熊谷賢治; 米田尚登
    計測自動制御学会論文集, 計測自動制御学会, 47, 09, 412-419, Sep. 2011, Peer-reviwed
    Scientific journal, Japanese
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  • 通信容量制約に基づく動的量子化器の統合設計
    岡島寛; 澤田賢治; 松永信智
    計測自動制御学会論文集, The Society of Instrument and Control Engineers, 47, 2, 126-133, Feb. 2011, Peer-reviwed, This paper proposes a design method of the dynamic quantizer for the networked control systems. In the networked control systems, the data size of the signals is limited because of the transmission rate of the communication channel. It is well known that feedback type dynamic quantizers such as Delta/Sigma modulator are effective for quantization of data series. The dynamic quantizer includes a set of the dynamic filter and the static quantizer. Many methods have been proposed to design the dynamic filter. However, the static quantizer part has not been designed although the quantization level number of the static quantizer has an effect on the data size. The simultaneous design of dynamic filter and the quantization level will be important issue to satisfy the given communication rate. In this paper, the integrated design method of the filter and the static quantizer is proposed based on the communication rate constraints. The proposed method is derived based on the invariant set analysis with LMIs. The effectiveness is shown by numerical examples.
    Scientific journal, Japanese
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  • Performance Improvement of Dynamic Quantizer with Reachability of Output
    kaibe joe; okajima hiroshi; sawada kenji; matsunaga nobutomo
    Proceedings of the Japan Joint Automatic Control Conference, The Japan Joint Automatic Control Conference, 54, 0, 15-15, 2011, 通信路を介する制御系においては，単位時間当たりに送信可能な情報量が限られているため，通信容量の制約への対処が重要課題の一つである．このとき，信号を通信容量を満たすデータ量に圧縮する量子化が必要となり，フィードバック型の動的量子化器が効果的であると知られている．本研究では，動的量子化器における量子化幅の最小化手法を提案する．提案法は出力可到達域に基づいたものであり，通信容量制約を満たした上で最小の量子化誤差を設定することができ，その結果として量子化誤差の影響を低減できる．その効果は従来研究との比較数値例にて確認する．
    Japanese
    DOI URL
  • Dynamic quantizer design for MIMO systems based on communication rate constraint
    K. Sawada; H. Okajima; N. Matsunaga; Y. Minami
    IECON Proceedings (Industrial Electronics Conference), 2572-2577, 2011, Peer-reviwed
    English
    DOI URL
  • Synthesis of dynamic quantizers for quantized feedback systems within invariant set analysis framework
    Kenji Sawada; Seiichi Shin
    2011 AMERICAN CONTROL CONFERENCE, IEEE, 4733-4739, 2011, Peer-reviwed, This paper focuses on quantized feedback systems which consist of the linear system and the dynamic quantizer. From the perspective of the invariant set analysis, we discuss the effectiveness and the limitation of our quantizer synthesis condition considering several performances. If the all transmission zeros of the given system are stable, the proposed quantizer gives an optimal output approximation property. Otherwise, our method can design a stable suboptimal quantizer guaranteed with infinite time control performance. The numerical examples show that our quantizer can achieve the coarsely-quantized signal, while avoiding the excess performance deterioration.
    International conference proceedings, English
  • Synthesis of decentralized dynamic quantizer within invariant set analysis framework
    Kenji Sawada; Seiichi Shin
    IFAC Proceedings Volumes (IFAC-PapersOnline), 18, 1, 11284-11289, 2011, Peer-reviwed, This paper focuses on the synthesis of decentralized dynamic quantizers for linear systems with discrete-valued signal in terms of invariant set analysis. We derive the synthesis condition that can be recast as parameter dependent linear matrix inequalities and has a closed-form solution under some circumstances. In the case of minimum phase systems, our method can provide an optimal decentralized dynamic quantizer in the sense that the quantizer gives an optimal output approximation property. Also, in the case of non-minimum phase systems, our method can provide a suboptimal stable decentralized dynamic quantizer. As a result, this paper gives a unified design method of the dynamic quantizer based on the invariant set analysis. © 2011 IFAC.
    International conference proceedings, English
    DOI URL
  • Integrated design of filter and interval in dynamic quantizer under communication rate constraint
    H. Okajima; K. Sawada; N. Matsunaga
    IFAC Proceedings Volumes (IFAC-PapersOnline), 18, 1, 8785-8791, 2011, Peer-reviwed, This paper proposes an design method of feedback type dynamic quantizers under communication rate constraints. It is well known that feedback type dynamic quantizers such as Delta/Sigma modulator are effective for encoding high resolution data into lower resolution data. The dynamic quantizers include a set of a filter and a static quantizer. When it is required to control under the communication rate constraint, the data size of signal should be minimized appropriately by quantization. In the field of control engineering, many dynamic quantizer design methods have been proposed in terms of the filter design. However, design of the static quantizer part has not been considered though it is also important to satisfy constraint of the data size. The quantization interval of the static quantizer part is strongly related to the data size. In this paper, an integrated design method of the filter and the quantization interval is proposed under the communication rate constraint. The proposed method is derived based on our previous work which design the interval to guarantee the communication rate constraint. By our proposed quantizer, the quantizer output satisfy the communication rate constraint and it gives good performance. The effectiveness of proposed quantizer is shown by numerical examples. © 2011 IFAC.
    International conference proceedings, English
    DOI URL
  • Dynamic quantizer design for MIMO systems based on communication rate constraint
    Hiroshi Okajima; Kenji Sawada; Nobutomo Matsunaga; Yuki Minami
    IEEJ Transactions on Electronics, Information and Systems, Institute of Electrical Engineers of Japan, 131, 10, 1767-1774, 2011, Peer-reviwed, This paper proposes a design method of dynamic quantizers for MIMO networked control systems. It is well known that feedback type dynamic quantizers are effective for quantization of the data series in the meaning of noise shaping. The dynamic quantizers include a set of a dynamic filter and a static quantizer. When it is required to use the quantizer under the network communication, the data size of signal should be minimized appropriately by the quantizers. The authors have proposed a design method of the dynamic quantizers for SISO systems based on the communication rate constraint. In this paper, the design method is extended to MIMO systems. By this extension, we can handle the communication rate constraint for a kind of concentrated systems. In the setting of the quantizer for MIMO system, bit assignment is important matter for appropriate design of information flow. The effectiveness of proposed design method is shown by numerical examples. © 2011 The Institute of Electrical Engineers of Japan.
    Scientific journal, English
    DOI URL
  • Optimal Task Schedule of Parallel Processing
    H. Shioda; K. Sawada; S. Shin
    The 2010 International Congress on Computer Applications and Computational Science, 360-363, Dec. 2010, Peer-reviwed
    International conference proceedings, English
  • Multi Function Printer Controlled by Images
    S. Hamamatsu; K. Sawada; S. Shin
    The 2010 International Congress on Computer Applications and Computational Science, 334-337, Dec. 2010, Peer-reviwed
    International conference proceedings, English
  • 離散値入力型SISOシステムに対する不変集合解析に基づく動的量子化器設計
    Kenji SAWADA; Seiichi Shin
    システム制御情報学会論文集, 23, 11, 249-256, Nov. 2010, Peer-reviwed
    Scientific journal, Japanese
    DOI URL
  • A design procedure of discrete-time tracking control systems with actuator saturation
    K. Sawada; T. Kiyama
    Proc. of SICE annual conference, 637-641, Aug. 2010, Peer-reviwed
    International conference proceedings, English
  • Modeling and Calibration of Automatic Guided Vehicle
    K. Tanaka; K. Sawada; S. Shin; K. Kumagai; H. Yoneda
    Proc. of SICE annual conference, 2485-2490, Aug. 2010, Peer-reviwed
    International conference proceedings, English
  • Dynamic quantizer synthesis based on invariant set analysis for SISO systems with discrete-valued input
    K. Sawada; S. Shin
    Proc of The 19th International Symposium on Mathematical Theory of Networks and Systems (MTNS 2010), 1385-1390, Jul. 2010, Peer-reviwed
    International conference proceedings, English
  • Optimal Quantizing Width Design of Dynamic Quantizers Based on the Communication Rate Constraints and Its Performance Analysis
    岡島寛; 松永信智; 澤田賢治
    計測自動制御学会論文集, The Society of Instrument and Control Engineers, 46, 6, 327-325, Jun. 2010, Peer-reviwed, This paper proposes the design method of the dynamic quantizer for the networked control systems. It is well known that feedback type dynamic quantizer such as Delta/Sigma modulator is effective for quantization of data series and many methods for designing the dynamics have been proposed. When it is required to control with network communication, the data size of signal should be minimized appropriately by quantizers. Since the quantizing width of the quantizer concern with the data size, determination of quantizing width is important problem in networked control systems. However, the quantizing width has not been designed analytically in the past researches. In this paper, we propose the design method of the quantizing width based on the LMIs. The quantizing width would be determined explicitly with the communication rate constraints. By the proposed method, the quantizing width guarantee that the signals are quantized appropriately within the given data size. The effectiveness is illustrated by numerical examples.
    Scientific journal, Japanese
    DOI URL
  • Optimal quantization interval design of dynamic quantizers which satisfy the communication rate constraints
    Hiroshi Okajima; Nobutomo Matsunaga; Kenji Sawada
    Proceedings of the IEEE Conference on Decision and Control, 4733-4739, 2010, Peer-reviwed, This paper proposes the design method of the dynamic quantizer for the networked control systems. It is well known that the dynamic quantizers, which consist of filter and static quantizer, are effective for compressing the data with small quantization error of control. Many methods for designing the dynamic quantizers have been proposed from the perspective of filter design. When it is required to control with network communication, the data size of signal should be minified appropriately by quantizers because of the communication rate constraint. Since the quantization interval (distance between two quantizer outputs) of the quantizer makes an impact on the data rate, determination of quantization interval is important matter in the dynamic quantizers. However, the design method of quantization interval has not been proposed explicitly in the past researches of the dynamic quantizer design. In this paper, we propose the design method of the smaller quantization interval which satisfy the communication rate constraints. The design method is derived as an LMI problem based on the invariant set analysis. By the proposed method, the quantization interval guarantees that the signals are quantized appropriately within the given data size. The effectiveness is illustrated by numerical examples. ©2010 IEEE.
    International conference proceedings, English
    DOI URL
  • A multi-sector analysis for dynamic quantizer synthesis
    Kenji Sawada; Seiichi Shin
    Proceedings of the IEEE International Symposium on Computer-Aided Control System Design, 1164-1169, 2010, Peer-reviwed, This paper considers analysis and synthesis methods of dynamic quantizers for linear feedback systems with discrete-valued signal, which consist of the linear system and the dynamic quantizer. We propose a multi-sector condition such that the quantization error is expressed in terms of the combination of various sector conditions. First, this paper proposes quantizer analysis conditions by using the multisector condition and the S-procedure. Second, this paper considers quantizer synthesis conditions based on the multisector analysis framework. Our method can design a stable quantizer such that the order of the quantizer is exactly the same as that of the given linear system and the infinite time control performance is always guaranteed. Finally, this paper points out that the proposed methods are helpful compared with the methods based on the invariant set analysis framework through numerical examples. © 2010 IEEE.
    International conference proceedings, English
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  • Implementation test model of torque control for Automatic Guided Vehicle
    Tatsuya Ikawa; Kenji Sawada; Seiichi Shin
    INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION AND SYSTEMS (ICCAS 2010), IEEE, 276-279, 2010, Peer-reviwed, This paper describes how to develop a torque control algorithm for automatic guided vehicle (AGV). Also, this paper describes a prototype machine which the method is implemented into. The prototype machine used in this paper is a wheel type robot with the H8 microcomputer. This paper points out that the proposed algorithm is helpful in terms of implementation experiments.
    International conference proceedings, English
  • Optimal Quantization Interval Design of Dynamic Quantizers which Satisfy the Communication Rate Constraints
    Hiroshi Okajima; Nobutomo Matsunaga; Kenji Sawada
    49TH IEEE CONFERENCE ON DECISION AND CONTROL (CDC), IEEE, 4733-4739, 2010, Peer-reviwed, This paper proposes the design method of the dynamic quantizer for the networked control systems. It is well known that the dynamic quantizers, which consist of filter and static quantizer, are effective for compressing the data with small quantization error of control. Many methods for designing the dynamic quantizers have been proposed from the perspective of filter design. When it is required to control with network communication, the data size of signal should be minified appropriately by quantizers because of the communication rate constraint. Since the quantization interval (distance between two quantizer outputs) of the quantizer makes an impact on the data rate, determination of quantization interval is important matter in the dynamic quantizers. However, the design method of quantization interval has not been proposed explicitly in the past researches of the dynamic quantizer design. In this paper, we propose the design method of the smaller quantization interval which satisfy the communication rate constraints. The design method is derived as an LMI problem based on the invariant set analysis. By the proposed method, the quantization interval guarantees that the signals are quantized appropriately within the given data size. The effectiveness is illustrated by numerical examples.
    International conference proceedings, English
  • Generalized sector synthesis of reduced-order output feedback controllers for servosystems with control input saturation
    K. Sawada; T. Kiyama
    Proc. of ICCAS-SICE international joint conference, 3066-3071, Aug. 2009, Peer-reviwed
    International conference proceedings, English
  • Generalized sector synthesis of output feedback control with anti-windup structure
    Kenji Sawada; Tsuyoshi Kiyama; Tetsuya Iwasaki
    SYSTEMS & CONTROL LETTERS, ELSEVIER SCIENCE BV, 58, 6, 421-428, Jun. 2009, Peer-reviwed, This paper considers the control synthesis problem for linear time invariant (LTI) continuous-time systems with actuator saturation nonlinearities. The control architecture is standard; a nominal LTI Output feedback with an anti-windup (AW) mechanism. Traditional approaches have focused on AW synthesis where the nominal controller is first designed to achieve a local performance in the linear region of the actuators and then the AW compensator is added to guarantee stability/performance properties when the actuators saturate. In contrast, this paper proposes a synthesis method to design both the nominal controller and the AW compensator simultaneously. Using the generalized sector (GS) approach in the multiplier setting, a Sufficient condition is given in terms of linear matrix inequalities so that a given ellipsoid is synthesized as a domain of attraction for the closed-loop system. Our result is shown to include the existing results on the simultaneous circle synthesis and the anti-windup GS synthesis as special cases. This paper also shows that the direct feed-through term in the AW compensator does not contribute to enlarging the achievable domain of attraction within the multiplier GS framework. (C) 2009 Elsevier B.V. All rights reserved.
    Scientific journal, English
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  • 低次出力Feedback/Anti-windup補償器による安定化設計―補償器の次数と制御性能の関係
    Kenji SAWADA; Tsuyoshi Kiyama
    システム制御情報学会論文集, THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE), 22, 4, 161-167, Apr. 2009, Peer-reviwed, This paper considers linear time-invariant continuous-time systems with control input saturation nonlinearities, and proposes two regional stability synthesis methods of output feedback controllers such as an ellipsoid defined by a level set of a quadratic Lyapunov function to be a domain of attraction for the systems based on the generalized sector approach. One of them is an integrated design of full-order dynamical output feedback and anti-windup controllers with the same plant order, while the other is an integrated design of reduced-order dynamical output feedback and antiwindup controllers to be less than the number of available plant states from the plant order. The two methods assume the output of the nonlinearities to be available for the control. In this case, this paper indicates that the synthesis problems using the two methods can be recast as linear matrix inequality (LMI) optimization problems respectively. Furthermore, it is proved that two subsets of achievable domains of attraction using the two controllers are exactly the same. Thus this paper concludes that the reduced-order controller does not decrease the size of the achievable domain of attraction, within our framework, when compared with that resulting from the full-order controller.
    Scientific journal, Japanese
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  • 入力飽和を有するサーボ系に対する出力フィードバック補償器の設計方法
    Kenji SAWADA; Tsuyoshi Kiyama
    システム制御情報学会論文集, 22, 3, 107-115, Mar. 2009, Peer-reviwed
    Scientific journal, Japanese
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  • 入力飽和を有するサーボ系の定常状態に関する条件の等価性
    Kenji SAWADA; Tsuyoshi Kiyama
    システム制御情報学会論文集, THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE), 21, 10, 339-341, Oct. 2008, Peer-reviwed
    Scientific journal, Japanese
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  • L∞performance analysis/synthesis for continuous-time control systems with actuator saturation under L∞ bounded disturbance
    K. Sawada; T. Kiyama
    Preprints of 3rd IFAC SYMPOSIUM on SYSTEM, STRUCTURE and CONTROL, ***, Oct. 2007, Peer-reviwed
    International conference proceedings, English
  • A design procedure of output regulation problems for anti-windup control systems
    Kenji Sawada; Tsuyoshi Kiyama
    2006 SICE-ICASE INTERNATIONAL JOINT CONFERENCE, VOLS 1-13, IEEE, 2169-+, 2006, Peer-reviwed, This paper considers an output regulation problem for a linear time invariant continuous-time system with saturation nonlinearities and/or an anti-windup control system which consists of controlled objects, servocompensators following the internal model principle, and dynamic output feedback, anti-windup and feedforward controllers. This problem is mainly concerned with perfect tracking and/or rejection of exogenous signals generated by some external systems. This paper proposes a convex design procedure which allows us to design dynamic output feedback, anti-windup and feedforward controllers simultaneously based on the existing output regulatable conditions. Our proposed design procedure guarantees a local stability and achieves the desired output regulation performance in a specific state space domain (a domain of quadratic performance). It is pointed out that our derived conditions can be recast as the linear matrix inequality (LMI) conditions permitting the existence of an algebraic loop from the output to the input of the saturation inlinearities.
    International conference proceedings, English
  • Relation between single-stage and two-stage method for antiwindup control synthesis
    K. Sawada; T. Kiyama
    Proc of SICE Annual Conference, 3027-3032, Aug. 2005, Peer-reviwed
    International conference proceedings, English
  • On the relation between analysis and synthesis conditions for discrete-time systems with saturation nonlinearities
    Tsuyoshi Kiyama; Kenji Sawada
    2005 44TH IEEE CONFERENCE ON DECISION AND CONTROL & EUROPEAN CONTROL CONFERENCE, VOLS 1-8, IEEE, 8124-8131, 2005, Peer-reviwed, This paper considers linear time-invariant (LTI) discrete-time systems with saturation and/or dead-zone non-linearities, and proposes analysis and synthesis methods of a regional 12 performance and/or a pole placement based on a quadratic Lyapunov function via a generalized sector and a polytopic approach. In particular, a new domain of 12 performance is defined by a region of initial states of the system considering the 12 performance and/or the pole placement For analysis, the problems based on the two approaches can be recast as linear matrix inequality (LMI) optimization ones respectively, and in the special case of single saturation or single dead-zone nonlinearity, it is proved that the generalized sector approach is exactly the same as the polytopic approach. Similarly, for synthesis, the problem based on the generalized sector approach can be recast as an LMI optimization problem where the outputs of the nonlinearities are assumed to be available for control. Next, the relation is clarified that the analysis and synthesis conditions can be reduced to the corresponding conditions for the continuous-time systems as the sampling period goes to zero. Finally, it is pointed out that our LMI-based approach is helpful through a numerical example designing anti-windup control systems.
    International conference proceedings, English
  • LMI-based L2 analysis/synthesis with saturating control via generalized sector approach
    T. Kiyama; K. Sawada
    Proc. of The 10th IFAC/IFORSIMACS/IFIP symposium on large scale systems: theory and applications, 504-510, Jul. 2004, Peer-reviwed
    International conference proceedings, English

MISC

  • Control System Design and Operation for Cyber Attacks
    Kenji Sawada
    Lead, The Robotics Society of Japan, Mar. 2024, Journal of the Robotics Society of Japan, 42, 2, 111-116, 0289-1824, 1884-7145
    URL
    DOI URL
  • エネルギー保存則に基づくプラントモデルの検証
    澤田賢治
    Lead, Aug. 2023, システム/制御/情報, 67, 8, 337-334, Japanese, Peer-reviwed, Invited, Introduction scientific journal
  • Special Issue on Navigation and Control Technologies for Autonomous Mobility
    Yuki Minami; Hiroshi Okajima; Kenji Sawada; Kazuma Sekiguchi
    Autonomous mobility, as exemplified by self-driving cars, autonomous mobile robots, drones, etc., is essential to the acceleration and practical application of transportation services and the automation of delivery, guidance, security, and inspection. Therefore, in recent years, expectations have been building for autonomous mobility to grow as a technology that not only improves the convenience and comfort of transportation and the efficiency of logistics but also leads to solutions to various social problems. Various technological elements are required to ensure the safety and quality of autonomous mobility. For example, technology is needed to create environmental maps and automatically determine obstacles based on data acquired by cameras and sensors such as LiDAR. Technologies for planning appropriate routes and controlling robots safely and comfortably are also essential.

    This special issue highlights 24 exciting papers, including 20 research papers, three letters, and one development report. They are related to “recognition,” “decision and planning,” and “control” technologies for autonomous mobile robots, such as self-driving cars and drones. The papers’ keywords are as follows:

    • Collision avoidance, path planning, path tracking control

    • Motion control, attitude control

    • Measurement, position and posture estimation, modeling

    • Point cloud processing

    We would like to express our gratitude to all authors and reviewers, and we hope that this special issue contributes to future research and development in autonomous mobility., Fuji Technology Press Ltd., 20 Apr. 2023, Journal of Robotics and Mechatronics, 35, 2, 229-230, 0915-3942, 1883-8049
    URL
    DOI URL
  • スマート保安とセキュリティ
    澤田賢治
    01 Apr. 2023, 計測技術, --, 4, -----, Japanese, Introduction other, False
    DOI URL
  • 制御システム向けセキュリティ対策技術
    藤田真太郎; 澤田賢治
    01 Apr. 2022, 電気学会誌, 142, 4, 212-214, Japanese, Introduction other
  • 制御分野におけるモデル活用型攻撃検知と縮退制御
    藤田真太郎; 澤田賢治
    01 Mar. 2022, 化学工業, 73, 3, 174-181, Japanese, Introduction other
  • 次世代システム制御理論とは何か：序論
    西村悠樹; 佐藤訓志; 澤田賢治; 大木健太郎; 星野健太; 佐藤康之; 定本知徳
    計測自動制御学会, 01 May 2021, 計測と制御, 60, 05, 381-384, Japanese, Peer-reviwed, Introduction other
  • 次世代システム制御理論とは何か：本論
    蛯原義雄; 奥宏史; 片山仁志; 坂本登; 津村幸治; 平田光男; 西村悠樹; 澤田賢治
    計測自動制御学会, 01 May 2021, 計測と制御, 60, 05, 385-394, Japanese, Peer-reviwed, Introduction other
  • 編集後記
    澤田賢治
    計測自動制御学会, 01 May 2021, 計測と制御, 60, 05, 395---, Japanese, Peer-reviwed, Introduction other
  • コントローラホワイトリストの自動化と検証
    藤田真太郎; 澤田賢治
    計測自動制御学会, 01 Jan. 2021, 計測と制御, 60, 01, 21-26, Japanese, Peer-reviwed, Introduction other
  • コントローラに対するホワイトリスト式サイバー攻撃検知
    澤田賢治
    01 Jan. 2021, 化学工業, 72, 1, 62-71, Japanese, Introduction other
  • 総論：制御システムセキュリティの現代と次世代
    澤田賢治
    計測自動制御学会, 01 Dec. 2019, 計測と制御, 58, 12, 906-911, Japanese, Peer-reviwed, Introduction other
  • 超スマート社会の社会品質を支えるi-パワードエネルギー・システム
    横川慎二; 市川晴久; 曽我部東馬; 澤田賢治; 早瀬修二; 大川富雄
    Oct. 2019, 品質, 49, 3, 28-31, Japanese, Peer-reviwed, Introduction other, 0386-8230, 201902228119313600
  • 制御システムとサイバーフィジカルセキュリティ
    澤田賢治; 細川嵩
    計測自動制御学会, 01 Aug. 2019, 計測と制御, 58, 8, 618-623, Japanese, Peer-reviwed, Introduction other
    DOI URL
  • The Info-powered Energy System that Supports the Social Quality of a Super Smart Society
    横川 慎二; 市川 晴久; 曽我部 東馬; 澤田 賢治; 早瀬 修二; 大川 富雄
    日本品質管理学会, Jul. 2019, 品質, 49, 3, 228-231, Japanese, 0386-8230, 40021976970, AN00354769
    URL
  • Theory and Applications of Encrypted Control Systems for Cyber Security
    Rikuna Baba; Kiminao Kogiso; Osamu Kaneko; Masako Kishida; Kenji Sawada
    03 Sep. 2018, IWSEC2018, -----, English, Summary international conference
  • PLCのためのモデルベースホワイトリスト
    澤田賢治
    システム制御情報学会, 01 Jun. 2018, システム/制御/情報, 62, 6, 209-214, Japanese, Peer-reviwed, Introduction other
  • 制御システムセキュリティ技術としてのモデルベース縮退運転システム
    澤田賢治
    システム制御情報学会, 01 Apr. 2018, システム/制御/情報, 62, 4, 141-146, Japanese, Peer-reviwed, Introduction other
  • 総論「産業システム連携のこれから－特集号発刊によせて」
    澤田賢治
    計測自動制御学会, 01 Jan. 2018, 計測と制御, 57, 1, 2-3, Japanese, Peer-reviwed, Introduction other
    DOI URL
  • Simulation and Evaluation of Whitelisting Intrusion Detection Systems according to Life cycle in Industrial Control Systems models
    Tsunato Nakai; Teruyoshi Yamaguchi; Sachihiro Ichikawa; Nobuhiro Kobayashi; Kosuke Hata; Kenji Sawada
    30 Aug. 2017, IWSEC2017, -----, English, Summary international conference
  • On the OpenPLC Based Robot Arm Control System
    藤田 真太郎; 秦 康祐; 澤田 賢治; 新 誠一; 細川 嵩
    電気学会, 24 Jun. 2017, 電気学会研究会資料. CT, 2017, 55, 1-4, Japanese, 40021255409, AA1250551X
    URL
  • ホワイトリスト運用のための複数の制御機器情報に基づいた運転状態の推定
    秦, 康祐; 望月, 明典; 澤田, 賢治; 中井, 綱人; 山口, 晃由; 小林, 信博
    産業用制御システム (ICS: Industrial Control System) をサイバー攻撃から防御する手法として，近年ホワイトリストを利用した異常検出手法が注目されている．先行研究ではICSの「停止中」や「立ち上げ」などの運転状態毎に異なる通信・動作パターンに着目し，運転状態に応じたホワイトリスト切り替え手法を提案した．加えて，複数機器で構成されるICSのうち1つの機器から取得した情報を利用してホワイトリストの切り替えに必要な運転状態情報を推定する手法について示した．これに対し本稿では，ネットワーク監視装置を利用して複数の機器から情報を取得することで運転状態を推定する．これにより，ホワイトリスト運用のための運転状態推定の信頼性向上を目指す．一方で運転状態推定に必要なトリガー信号はICSを構成する機器によって生成に要する時間が異なるため，本推定結果を利用するとホワイトリスト運用に支障をきたす可能性がある．そこで，本稿ではホワイトリストの切り替え手法も新たに提案する．また，提案手法の有用性を検証するために気液プラントシステムのシミュレーションモデルを用いて数値実験を行った．その結果，先行研究の手法と比較してより信頼性の高い運転状態の推定ができることを示した．, 21 Jun. 2017, マルチメディア，分散協調とモバイルシンポジウム2017論文集, 2017, 1145-1151, Japanese, 170000177948
    URL
  • Byzantine generals problem in leader follower consensus using error correction code
    川上 重太; 澤田 賢治; 新 誠一
    システム制御情報学会, 23 May 2017, システム制御情報学会研究発表講演会講演論文集, 61, 6p, Japanese, 40021220929
    URL
  • Availability Check for Control Software via Graphillion
    塚田 健人; 岸田 貴光; 澤田 賢治; 新 誠一
    システム制御情報学会, 23 May 2017, システム制御情報学会研究発表講演会講演論文集, 61, 6p, Japanese, 40021220953
    URL
  • EddyStone-URLを用いた行方不明者捜索システムの開発 (知的環境とセンサネットワーク)
    高橋 すみか; 上野 里奈; 川喜田 佑介; 澤田 賢治; 新 誠一; 市川 晴久
    電子情報通信学会, 19 Jan. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116, 407, 13-17, Japanese, 0913-5685, 40021101701
    URL
  • 再生可能エネルギー指向自律分散グリッドーバーチャルグリッドー
    横川慎二; 市川晴久; 曽我部東馬; 澤田賢治; 川喜田佑介
    日本信頼性学会, Jan. 2017, 日本信頼性学会誌, 39, 1, 8-15, Japanese, Peer-reviwed, Introduction other, 0919-2697, 40021068608, AN10540883
    URL
  • Model-based techniques for control system security
    澤田 賢治; 佐々木 翼; 塚田 健人; 新 誠一; 細川 嵩
    電子情報通信学会, 13 May 2016, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116, 24, 45-50, Japanese, 0913-5685, 40020848803
    URL
  • Model-based techniques for control system security
    澤田 賢治; 佐々木 翼; 塚田 健人; 新 誠一; 細川 嵩
    電子情報通信学会, 13 May 2016, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116, 25, 45-50, Japanese, 0913-5685, 40020848870
    URL
  • J101012 Clutch Judder Suppression with H∞ Control
    SANDO Katsuhiko; YAMAMOTO Takeshi; HASHIMOTO Shin; SHIN Seiichi; SAWADA Kenji
    Judder is well known oscillation occurring in dry clutches. To maintain riding comfort and silence in dry clutches, a lot of studies of judder analysis and machine design suppressing judder have been done. This paper describes the design and implementation of a robust control technique as a judder suppression approach for clutch during shifting. We address the automatic transmission using dry clutches of which the μ-V characteristics show a complicated nonlinearity. Specifically, their friction coefficient varies non-linearly with respect to the rotational speed during shifting. In this paper, it is clarified that the non-linear μ-V characteristic can be expressed as frequency uncertainties and then the control system is constructed with H∞ control. To verify the validity of such the approach, the results of simulation and bench testing are presented. As a result, we see that the proposed approach allows us to achieve the shifting without judder. Furthermore, we show the three controller requirements by analyzing the robust controllers., The Japan Society of Mechanical Engineers, 08 Sep. 2013, Mechanical Engineering Congress, Japan, 2013, "J101012-1"-"J101012-5", Japanese, 110009935360, AA12588255
  • サーボ系・内部モデル原理
    澤田賢治
    システム制御情報学会, Apr. 2012, システム/制御/情報, 56, 4, 188-191, Japanese, Peer-reviwed, Introduction other
  • 信号の量子化レベル数を陽に扱った量子化幅の最適設計
    岡島寛; 松永信智; 澤田賢治
    2009, 制御理論シンポジウム資料, 38th, 200902289247084870

Books and other publications

  • プラントＤＸ
    澤田賢治
    Scholarly book, Japanese, Joint work, 4章第5節「産業制御システムにおけるホワイトリスト式のサイバー攻撃検知技術」の執筆担当, 情報技術協会, 28 Apr. 2022
  • 工場・製造プロセスへのIoT・AI導入と活用の仕方
    澤田賢治
    Scholarly book, Japanese, Joint work, 12章第2節「モデルベース開発と制御システムセキュリティ」 の執筆担当, 情報技術協会, 30 Jun. 2020
  • IoT時代のサイバーセキュリティ～制御システムの脆弱性検知と安全性・堅牢性確保～
    編集 技術研究組合制御システムセキュリティセンター(CSS
    Scholarly book, Japanese, Joint work, 4章1節「対策の概要」の執筆担当, エヌ・ティー・エス, 17 Nov. 2018
  • 倒立振子で学ぶ制御工学
    川田 昌克; 東 俊一; 市原 裕之; 浦久保 孝光; 大塚 敏之; 甲斐 健也; 國松 禎明; 澤田 賢治; 永原 正章; 南 裕樹
    Scholarly book, Japanese, Joint work, 第I部6章と第II部1章, 森北出版, 03 Mar. 2017

Lectures, oral presentations, etc.

  • 強化学習を用いた速度計画生成アルゴリズムの動揺病および車両性能の評価
    河上響; 澤田賢治
    Oral presentation, MSCS2024
    20 Mar. 2024
    17 Mar. 2024- 20 Mar. 2024
    共同研究・競争的資金等URL
  • 補完型状態予測を用いた非線形モデル予測制御による牽引車制御
    佐藤海斗; 澤田賢治
    Oral presentation, MSCS2024
    20 Mar. 2024
    17 Mar. 2024- 20 Mar. 2024
    共同研究・競争的資金等URL
  • 目標車速推定に対するプライバシー保護型車群速度制御
    兵藤剛士; 澤田賢治
    Oral presentation, MSCS2024
    20 Mar. 2024
    17 Mar. 2024- 20 Mar. 2024
    共同研究・競争的資金等URL
  • クルーズコントロールに対するデータ駆動制御と毒化攻撃の検討
    池崎太一; 澤田賢治; 金子修
    Oral presentation, MSCS2024
    20 Mar. 2024
    17 Mar. 2024- 20 Mar. 2024
    共同研究・競争的資金等URL
  • 状態分離によるプライバシー保護型車群速度制御に関する研究
    兵藤 剛士; 澤田 賢治
    Oral presentation, SCIS2024
    25 Jan. 2024
    23 Jan. 2024- 26 Jan. 2024
    共同研究・競争的資金等URL
  • サイバー攻撃下における協調型車間距離制御装置に対するフィルタリング機能の開発
    藤本 拓磨; 澤田 賢治; 山藤 勝彦
    Oral presentation, SCIS2024
    25 Jan. 2024
    23 Jan. 2024- 26 Jan. 2024
  • サイバー攻撃下での階層的スーパーバイザ制御によるモデル再構築
    小川 寛太; 澤田 賢治
    Oral presentation, SCIS2024
    25 Jan. 2024
    23 Jan. 2024- 26 Jan. 2024
    共同研究・競争的資金等URL
  • 制御システムの攻撃検知における尤度比検定を用いた誤検知・検知漏れの一評価
    西内 達哉; 安部 芳紀; 渡邉 洋平; 岩本 貢; 澤田 賢治; 新 誠一
    Oral presentation, SCIS2024
    25 Jan. 2024
    23 Jan. 2024- 26 Jan. 2024
  • デジタルツインによる鉄道制御系の脆弱性評価と強靭化の検討
    岡村 望夢; 澤田 賢治; 尾崎 紀之; 宮内 茂人
    Oral presentation, SCIS2024
    25 Jan. 2024
    23 Jan. 2024- 26 Jan. 2024
  • 乗り⼼地を考慮したデータ駆動型経路追従
    藤田 脩作; 澤田 賢治
    Oral presentation, 2023年度計測自動制御学会関西支部・システム制御情報学会シンポジウム
    12 Jan. 2024
    12 Jan. 2024- 12 Jan. 2024
    共同研究・競争的資金等URL
  • レジリエンスな⾞群ネットワークに対するプライバシー保護性能の⼀評価
    兵藤 剛士; 澤田 賢治
    Oral presentation, 2023年度計測自動制御学会関西支部・システム制御情報学会シンポジウム
    12 Jan. 2024
    12 Jan. 2024- 12 Jan. 2024
    共同研究・競争的資金等URL
  • 強化学習を⽤いた燃費および乗り⼼地の改善
    河上 響; 澤田 賢治
    Oral presentation, 2023年度計測自動制御学会関西支部・システム制御情報学会シンポジウム
    12 Jan. 2024
    12 Jan. 2024- 12 Jan. 2024
    共同研究・競争的資金等URL
  • ⾞群制御におけるセンサインシデント影響を削減する協調型フィルタリング機能の開発
    藤本 拓磨; 澤田 賢治
    Oral presentation, 2023年度計測自動制御学会関西支部・システム制御情報学会シンポジウム
    12 Jan. 2024
    12 Jan. 2024- 12 Jan. 2024
    共同研究・競争的資金等URL
  • 自動運転車の速度計画における乗員状態考慮の乗り心地向上に対する有効性
    戸高拓海; 佐藤海斗; 澤田賢治; 高野潤一; 山藤勝彦; 今地昇平
    Oral presentation, システム数理と応用研究会
    16 Nov. 2023
    16 Nov. 2023- 17 Nov. 2023
    共同研究・競争的資金等URL
  • プライバシー保護型車群速度制御の速度応答と情報開示集合に対する一考察
    兵藤剛士; 澤田賢治
    Oral presentation, システム数理と応用研究会
    16 Nov. 2023
    16 Jun. 2023- 17 Nov. 2023
    共同研究・競争的資金等URL
  • 制御システムにおける攻撃検知手法の理論的かつ網羅的評価の一検討
    杉本 航太; 安部 芳紀; 西内 達哉; 渡邉 洋平; 澤田 賢治; 岩本 貢
    Oral presentation, CSS 2023
    31 Oct. 2023
    30 Oct. 2023- 02 Nov. 2023
  • 制御システムのサイバー攻撃における尤度比検定からの一評価
    西内 達哉; 安部 芳紀; 渡邉 洋平; 岩本 貢; 澤田 賢治
    Oral presentation, Japanese, 第66回自動制御連合講演会
    08 Oct. 2023
    07 Oct. 2023- 08 Oct. 2023
  • プライバシー保護型平均合意制御を適用した車群速度制御に関する研究
    兵藤 剛士; 澤田 賢治
    Oral presentation, Japanese, 第66回自動制御連合講演会, Invited
    07 Oct. 2023
    07 Oct. 2023- 08 Oct. 2023
  • CACCにおけるセンサインシデント影響を削減するフィルタリング機能の開発
    藤本 拓磨; 澤田 賢治
    Oral presentation, Japanese, 第66回自動制御連合講演会, Invited
    07 Oct. 2023
    07 Oct. 2023- 08 Oct. 2023
  • 攻撃下の自律分散系の制御継続機能の対称性と可観測性の実験的評価
    相澤久美; 澤田賢治
    Oral presentation, Japanese, 2023年電気学会電子・情報・システム部門大会
    30 Aug. 2023
    30 Aug. 2023- 02 Sep. 2023
  • スーパーバイザ制御理論によるサイバー攻撃を考慮した縮退運転モデルの設計
    小川寛太; 澤田賢治
    Oral presentation, Japanese, 2023年電気学会電子・情報・システム部門大会
    30 Aug. 2023
    30 Aug. 2023- 02 Sep. 2023
  • プラント点検ロボットにおける仮想 / 実観測の時系列差分による異常検出
    服部圭一郎; 小島匠太郎; Ranulfo Bezerra; 岡田佳都; 大野和則; 石原真太郎; 澤田賢治; 田所諭
    Poster presentation, Japanese, ロボティクス・メカトロニクス 講演会 2023
    28 Jun. 2023
    28 Jun. 2023- 02 Jul. 2023
  • 列挙型異常検知を用いた自律分散型照明制御システム
    相澤 久美; 澤田 賢治; 藤田 真太郎; 池田 佳輝; 小川 寛太
    Oral presentation, Japanese, SCI'23
    19 May 2023
    17 May 2023- 19 May 2023
  • 固有値制約に基づく車群に対する割り込み位置の最適化に関する研究
    兵藤 剛士; 佐藤 海斗; 澤田 賢治
    Oral presentation, Japanese, SCI'23
    18 May 2023
    17 May 2023- 19 May 2023
  • 情報理論を用いたModbus TCP通信のパケット解析と攻撃検知に関する検討
    西内 達哉; 藤田 真太郎; 渡邊 洋平; 岩本 貢; 澤田 賢治
    Oral presentation, English, SCI'23
    17 May 2023
    17 May 2023- 19 May 2023
  • モデル予測制御による乗り心地を考慮した経路生成法
    戸髙 拓海; 佐藤 海斗; 澤田 賢治; 髙野 潤一; 山藤 勝彦; 今地 昇平
    Oral presentation, English, SCI'23
    17 May 2023
    17 May 2023- 19 May 2023
  • 流体的衝突回避を実現する群ロボットの分散計算と通信量の関係
    柴原将太朗,澤田賢治
    Oral presentation, Japanese, 第10回制御部門マルチシンポジウム予稿集／計測自動制御学会,第10回制御部門マルチシンポジウム
    11 Mar. 2023
  • Human in the loop systemによるドライバ操作と支援操作の協調性評価
    佐藤海斗,澤田賢治
    Oral presentation, Japanese, 第10回制御部門マルチシンポジウム予稿集／計測自動制御学会,第10回制御部門マルチシンポジウム
    11 Mar. 2023
  • Connected ACCに対する前前方車情報を用いたフィルタリング機能の検討
    藤本拓磨,澤田賢治
    Oral presentation, Japanese, 第10回制御部門マルチシンポジウム予稿集／計測自動制御学会,第10回制御部門マルチシンポジウム
    10 Mar. 2023
  • サイバー攻撃発生時の安全復旧を目的とした空間分割に基づくスーパーバイザ設計
    池田佳輝,澤田賢治,松本典剛,小倉貴志,阪田恒晟
    Oral presentation, Japanese, 第10回制御部門マルチシンポジウム予稿集／計測自動制御学会,第10回制御部門マルチシンポジウム
    10 Mar. 2023
  • 制御システムでの強化学習によるブロックリストの生成
    小川寛太,澤田賢治,松本典剛,小倉貴志,阪田恒晟
    Oral presentation, Japanese, 第10回制御部門マルチシンポジウム予稿集／計測自動制御学会,第10回制御部門マルチシンポジウム
    10 Mar. 2023
  • スマートBA システムを支える安全安心なセキュア制御ネットワーク
    澤田賢治
    Public discourse, Japanese, 電気通信大学新技術紹介フェア2023冬, Invited, 電気通信大学, Domestic conference
    28 Feb. 2023
  • センサ攻撃を受ける協調型車間距離制御装置に対するフィルタリング機能の検討
    藤本拓磨,澤田賢治,山藤勝彦
    Oral presentation, Japanese, SCIS2023/SCIS2023予稿集
    26 Jan. 2023
  • 強化学習を用いた制御システムのブロックリストの設計
    小川寛太,澤田賢治,小倉貴志,阪田恒晟
    Oral presentation, Japanese, SCIS2023/SCIS2023予稿集
    25 Jan. 2023
  • 制御系のサイバー攻撃からの安全復旧のための空間分割に基づく回復スーパーバイザ
    池田佳輝,澤田賢治,小倉貴志,阪田恒晟
    Oral presentation, Japanese, SCIS2023/SCIS2023予稿集
    25 Jan. 2023
  • Modbus TCP通信のパケット解析と相対エントロピーによる攻撃検知に関する検討
    西内達哉,藤田真太郎,渡邉洋平,岩本貢,澤田賢治
    Oral presentation, Japanese, SCIS2023/SCIS2023予稿集
    25 Jan. 2023
  • 認証信号付きカルマンフィルタに対するレギュレーション性能と攻撃検知率の実験的評価
    関根悠司,安部芳紀,藤田真太郎,渡邉洋平,澤田賢治,岩本貢
    Oral presentation, Japanese, SCIS2023/SCIS2023予稿集
    25 Jan. 2023
  • 制御からみたサイバーセキュリティ～難しいこと簡単なこと
    澤田賢治
    Public discourse, Japanese, 連携講習会（全2回）「機械のサイバーセキュリティ ～つながる機械の落とし穴～」, Invited, 日本機械学会, Domestic conference
    10 Jan. 2023
  • CACCシステムに対する予測ガバナの適用
    藤本拓磨,澤田賢治
    Oral presentation, Japanese, 第65回自動制御連合講演会予稿集
    14 Nov. 2022
  • 通信切替を伴うマルチエージェントシステムの分散型Receding Horizon Total Control
    谷山晴紀,市原裕之,澤田賢治
    Oral presentation, Japanese, 第65回自動制御連合講演会予稿集
    14 Nov. 2022
  • サイバー攻撃下での制御系回復のためのスーパーバイザ設計
    池田佳輝,澤田賢治
    Oral presentation, Japanese, 第65回自動制御連合講演会予稿集, 学生優秀発表賞受賞
    13 Nov. 2022
  • 強化学習に基づく制御システムの脆弱性評価
    小川寛太,澤田賢治
    Oral presentation, Japanese, 第65回自動制御連合講演会予稿集
    13 Nov. 2022
  • 制御システムのセキュリティ動向と制御機器から始める信頼性向上
    澤田賢治
    Public discourse, Japanese, 2022年度東京都水道局研究開発報告会, Invited, 東京都水道局, Domestic conference
    12 Sep. 2022
  • 通信遅延を考慮した経路計画に基づく自動運転に関する研究
    兵藤剛士; 藤本拓磨; 國岡風我; 澤田賢治
    Oral presentation, Japanese, 2022年電気学会電子・情報・システム部門大会, Domestic conference
    31 Aug. 2022
  • 自動運転機能と異なる判断基準を持つドライバを想定した切替型 Shared Control
    堀内柚那; 澤田賢治
    Oral presentation, Japanese, 2022年電気学会電子・情報・システム部門大会, Domestic conference
    31 Aug. 2022
  • サイバー攻撃にレジリエントなPLC向け縮退ロジックの実装
    阪田恒晟; 藤田真太郎; 澤田賢治; 藤田淳也; 遠藤浩通; 松本典剛
    Oral presentation, Japanese, 第66回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第66回システム制御情報学会研究発表講演会, オンライン
    18 May 2022
  • スーパーバイザの設計による脆弱性の表現とその防御方策
    小川寛太; 阪田恒晟; 澤田賢治
    Oral presentation, Japanese, 第66回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第66回システム制御情報学会研究発表講演会, オンライン
    18 May 2022
  • スーパーバイザの設計による脆弱性の表現とその防御方策
    小川寛太; 阪田恒晟; 澤田賢治
    Oral presentation, Japanese, 第66回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第66回システム制御情報学会研究発表講演会, オンライン
    18 May 2022
  • 切替型Shared Controlにおけるドライバ支援方法の検討
    堀内柚那; 山藤勝彦; 松下遥香; 澤田賢治
    Oral presentation, Japanese, 第66回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第66回システム制御情報学会研究発表講演会, オンライン
    18 May 2022
  • 予測ガバナによる自車両のセンサ誤差を考慮したACCの設計
    藤本拓磨; 松下遥香; 澤田賢治; 山藤勝彦
    Oral presentation, Japanese, 第66回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第66回システム制御情報学会研究発表講演会, オンライン
    18 May 2022
  • 制御システムのセキュリティ技術：縮退制御と回復制御
    澤田賢治
    Public discourse, Japanese, 第2回横断型研究会「サイバーフィジカル時代の横断型情報セキュリティ」, Invited, 横断型研究会, Domestic conference
    25 Apr. 2022
  • FAシステムにおけるサイバーセキュリティ技術：縮退制御と回復制御
    澤田賢治
    Public discourse, Japanese, システム制御情報学会CyFA研究分科会第5回例会「ネットワーク化電子制御機械システムにおけるセキュリティ確保の最前線」, Invited, システム制御情報学会, Domestic conference
    22 Mar. 2022
  • サイバー攻撃下での制御システムにおける復帰動作順序の導出方法
    池田佳輝; 阪田恒晟; 澤田賢治
    Oral presentation, Japanese, 第9回制御部門マルチシンポジウム予稿集／計測自動制御学会,第9回制御部門マルチシンポジウム, Domestic conference
    08 Mar. 2022
  • シーケンス制御システムのホワイトリスト式異常検知のためのモデル化の検討
    藤田真太郎; 澤田賢治
    Oral presentation, Japanese, 第9回制御部門マルチシンポジウム予稿集／計測自動制御学会,第9回制御部門マルチシンポジウム, Domestic conference
    08 Mar. 2022
  • 自動運転車両の利他的な車線変更に起因する渋滞とその解消速度の評価
    望月優加理; 澤田賢治
    Oral presentation, Japanese, 第9回制御部門マルチシンポジウム予稿集／計測自動制御学会,第9回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2022
  • 予測ガバナによる前方車両の一時停止を考慮したACCの設計
    藤本拓磨; 澤田賢治; 山藤勝彦
    Oral presentation, Japanese, 第9回制御部門マルチシンポジウム予稿集／計測自動制御学会,第9回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2022
  • ドライバの予見動作に応じた切替型Shared Controlに関する研究
    堀内柚那; 澤田賢治
    Oral presentation, Japanese, 第9回制御部門マルチシンポジウム予稿集／計測自動制御学会,第9回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2022
  • 離散化主双対勾配アルゴリズムによるReceding-Horizon Estimationの提案
    佐藤海斗; 澤田賢治
    Oral presentation, Japanese, 第9回制御部門マルチシンポジウム予稿集／計測自動制御学会,第9回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2022
  • スーパーバイザ制御に基づく脆弱性の表現とその防御方法の検討
    小川寛太; 阪田恒晟; 澤田賢治
    Oral presentation, Japanese, 第9回制御部門マルチシンポジウム予稿集／計測自動制御学会,第9回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2022
  • 切替を伴うマルチエージェントシステムの分散型 Receding Horizon Total Control
    谷山晴紀; 市原裕之; 澤田賢治
    Oral presentation, Japanese, 第9回制御部門マルチシンポジウム予稿集／計測自動制御学会,第9回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2022
  • サイバー攻撃に対するレジリエントな縮退運転システムの設計と実装
    阪田恒晟; 藤田真太郎; 澤田賢治; 遠藤 浩通; 松本 典剛
    Oral presentation, Japanese, SCIS2022/SCIS2022予稿集, Domestic conference
    22 Jan. 2022
  • 制御システムにおけるインシデント発生後の状態復帰動作の導出方法
    池田佳輝; 阪田恒晟; 澤田賢治; 藤田淳也; 松本典剛
    Oral presentation, Japanese, SCIS2022/SCIS2022予稿集, Domestic conference
    22 Jan. 2022
  • 制御システムに対する脆弱性を考慮したスーパーバイザの設計
    小川寛太; 阪田恒晟; 澤田賢治
    Oral presentation, Japanese, SCIS2022/SCIS2022予稿集, Domestic conference
    22 Jan. 2022
  • シーケンス制御システムに対するホワイトリスト式異常検知のための正常状態遷移のモデル化
    藤田真太郎; 澤田賢治
    Oral presentation, Japanese, SCIS2022/SCIS2022予稿集, Domestic conference
    22 Jan. 2022
  • Human-In-The-Loop Systemによるドライバ個性を反映したAdaptive Cruise Control
    松下遥香; 澤田賢治
    Oral presentation, Japanese, 第64回自動制御連合講演会予稿集／計測自動制御学会,第63回自動制御連合講演会, Domestic conference
    13 Nov. 2021
  • サイバー攻撃に対するレジリエントなスーパーバイザの設計
    阪田恒晟; 藤田真太郎; 澤田賢治
    Oral presentation, Japanese, 第64回自動制御連合講演会予稿集／計測自動制御学会,第63回自動制御連合講演会, Domestic conference
    13 Nov. 2021
  • 産業用制御システムのためのマルコフ決定過程を用いたホワイトリスト生成の検討
    藤田真太郎; 澤田賢治
    Oral presentation, Japanese, 第64回自動制御連合講演会予稿集／計測自動制御学会,第63回自動制御連合講演会, Domestic conference
    13 Nov. 2021
  • 混雑緩和のための行動モデリングと制御
    浅中莉子; 本間俊貴; 井上正樹; 澤田 賢治
    Oral presentation, Japanese, 第64回自動制御連合講演会予稿集／計測自動制御学会,第63回自動制御連合講演会, Domestic conference
    13 Nov. 2021
  • 複数列縦隊移動するロボット大群の障害物回避のためのネットワーク重み関数
    柴原将太朗; 澤田賢治
    Oral presentation, Japanese, 2021年電気学会電子・情報・システム部門大会, Domestic conference
    16 Sep. 2021
  • ドライバの予見動作を支援するMPC型自動運転システムに関する研究
    堀内柚那; 澤田賢治; 山藤勝彦
    Oral presentation, Japanese, 2021年電気学会電子・情報・システム部門大会, Domestic conference
    16 Sep. 2021
  • 二重化制御システムにおける異常発生時の制御器引き継ぎ方法
    藤田真太郎; 澤田賢治
    Oral presentation, Japanese, 2021年電気学会電子・情報・システム部門大会, Domestic conference
    16 Sep. 2021
  • FAシステムにおけるサイバー攻撃検知～機器連携とログ活用
    澤田賢治
    Public discourse, Japanese, 電子情報通信学会ソサエティ大会，一般公開セッション「IoTロボティクス時代を支えるネットワーク技術」, Invited, 電子情報通信学会, Domestic conference
    16 Sep. 2021
  • 複数攻撃に対する有限オートマトンを用いた異常検知と異常箇所判定モデル
    池田佳輝; 澤田賢治
    Oral presentation, Japanese, 2021年電気学会電子・情報・システム部門大会, Domestic conference
    15 Sep. 2021
  • 制御システムのモデルベースセキュリティ
    澤田賢治
    Public discourse, Japanese, 電子情報通信学会 センサネットワークとモバイルインテリジェンス（SeMI）研究専門委員会，「横断型研究会: スマートシティ時代の情報セキュリティ」, Invited, 電子情報通信学会 センサネットワークとモバイルインテリジェンス（SeMI）研究専門委員会, Domestic conference
    28 Jul. 2021
  • 制御工学からアプローチしたサイバーセキュリティ～何が難しく何が簡単なのか～
    澤田賢治
    Public discourse, Japanese, システム制御情報学会・計測自動制御学会 チュートリアル講座2021「制御システムセキュリティとプライバシー」, Invited, システム制御情報学会・計測自動制御学会, Domestic conference
    21 Jul. 2021
  • 電力インフラのエッジデバイスに適用可能なセキュリティ機能開発
    澤田賢治
    Public discourse, Japanese, i-PERCシンポジウム2021 ～カーボンニュートラルに向けた電力エネルギーと情報通信～, 電気通信大学i-パワードエネルギー・システム研究センター, Domestic conference
    30 Jun. 2021
  • IoT社会におけるインフラシステムのサイバーセキュリティ
    澤田賢治
    Public discourse, Japanese, 電気通信大学第123回研究開発セミナー, Invited, 電気通信大学第123回研究開発セミナー, Domestic conference
    30 Jun. 2021
  • 予測誤差フィードバックを有するガウス過程回帰による制御システムの異常検知
    澤田賢治; 長谷川亮太
    Oral presentation, Japanese, 第65回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第65回システム制御情報学会研究発表講演会, オンライン
    28 May 2021
  • FA用3Dシミュレータによるセキュリティ検証用ベンチマークモデル開発の提案～制御システムのホワイトリスト～
    澤田賢治
    Public discourse, Japanese, FAOP技術セミナー2021, Invited, ＦＡオープン推進協議会のセミナー, Domestic conference
    18 Mar. 2021
  • 連続時間最適化アルゴリズムによる線形モデル予測制御と受動性に基づく収束性解析
    佐藤海斗; 澤田賢治; 井上正樹
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    03 Mar. 2021
  • 車群速度制御のためのスパースピニング制御
    若狭拓馬; 澤田賢治
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    03 Mar. 2021
  • ドライバの予見動作を支援するMPC型自動運転システムに関する研究
    堀内柚那; 山藤勝彦; 澤田賢治
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    02 Mar. 2021
  • 複数列縦隊移動するロボット群の障害物回避のためのネットワーク重み関数
    柴原将太朗; 若狭拓馬; 澤田賢治
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    02 Mar. 2021
  • 有限オートマトンモデルに基づく複数攻撃に対する異常検知と異常箇所推定
    池田佳輝; 阪田恒晟; 藤田真太郎; 澤田賢治
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    02 Mar. 2021
  • 制御システムに対する縮退運転ロジックの設計
    阪田恒晟; 藤田真太郎; 澤田賢治
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    02 Mar. 2021
  • シーケンス制御のホワイトリスト式異常検知のための並列動作のモデル化
    藤田真太郎; 澤田賢治; 細川嵩
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    02 Mar. 2021
  • 産業制御システム向けサイバー攻撃エミュレーション技術の調査
    藤田淳也; 小倉貴志; 松本典剛; 澤田賢治; 金子修
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    02 Mar. 2021
  • 産業制御システムのセキュリティを強化する資産管理手法
    松本典剛; 藤田淳也; 遠藤浩通; 山田勉; 澤田賢治; 金子修
    Oral presentation, Japanese, 第8回制御部門マルチシンポジウム予稿集／計測自動制御学会,第8回制御部門マルチシンポジウム, Domestic conference
    02 Mar. 2021
  • コントローラホワイトリスト生成のための制御プログラム構造
    藤田真太郎; 澤田賢治; 細川嵩
    Oral presentation, Japanese, SCIS2021/SCIS2021予稿集, Domestic conference
    21 Jan. 2021
  • 複数攻撃を想定した有限オートマトンモデルによる異常検知と特定
    池田佳輝; 阪田恒晟; 藤田真太郎; 澤田賢治
    Oral presentation, Japanese, SCIS2021/SCIS2021予稿集, Domestic conference
    21 Jan. 2021
  • 制御システムに対する縮退運転のためのモデル化とシミュレーション解析
    阪田恒晟; 藤田真太郎; 澤田賢治
    Oral presentation, Japanese, SCIS2021/SCIS2021予稿集, Domestic conference
    21 Jan. 2021
  • ガウス過程回帰の信頼区間を利用した制御システムの時系列異常検知
    長谷川亮太; 澤田賢治
    Oral presentation, Japanese, SCIS2021/SCIS2021予稿集, Domestic conference
    21 Jan. 2021
  • 制御システムセキュリティ：動くモノを守る技術
    澤田賢治
    Public discourse, Japanese, 電気通信大学新技術紹介フェア2020秋, Invited, 計測自動制御学会, Domestic conference
    25 Nov. 2020
  • 連続時間最適化アルゴリズムによる非線形モデル予測 制御の提案
    佐藤海斗; 澤田賢治; 井上正樹
    Oral presentation, Japanese, 第63回自動制御連合講演会予稿集／計測自動制御学会,第63回自動制御連合講演会, Domestic conference
    22 Nov. 2020
  • 小型マイクログリッドにおける協調給電プロトコルと正当性検証のためのモデル化
    澤田賢治
    Oral presentation, Japanese, 第63回自動制御連合講演会予稿集／計測自動制御学会,第63回自動制御連合講演会, Domestic conference
    22 Nov. 2020
  • 分散協調部分状態オブザーバを用いた車群位置推定における補間関数のスパースモデリング手法
    若狭拓馬; 澤田賢治
    Oral presentation, Japanese, 第63回自動制御連合講演会予稿集／計測自動制御学会,第63回自動制御連合講演会, Domestic conference
    22 Nov. 2020
  • サイバー攻撃に対するレジリエントな第三者監視システ ムのモデル化
    阪田恒晟; 藤田真太郎; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第63回自動制御連合講演会予稿集／計測自動制御学会,第63回自動制御連合講演会, Domestic conference
    21 Nov. 2020
  • 制御システムのための多階層型セキュリティ機能の開発
    澤田賢治
    Public discourse, Japanese, 第63回自動制御連合講演会，先端制御セミナー, Invited, 計測自動制御学会, Domestic conference
    21 Nov. 2020
  • 制御システムに対する協調型ホワイトリストの検討
    藤田 真太郎; 澤田賢治; 新 誠一; 細川 嵩
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2020）予稿集／計測自動制御学会,システム・情報部門学術講演会
    15 Nov. 2020
  • Human-In-The-Loop Systemによるドライバー個性を反映した後輪操舵制御
    松下遥香; 佐藤海斗; 佐倉衛; 澤田賢治; 新誠一; 井上正樹
    Oral presentation, Japanese, 第64回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第64回システム制御情報学会研究発表講演会, オンライン
    20 May 2020
  • サイバー攻撃に対するレリジエントな第三者監視システムの構築
    阪田恒晟; 藤田真太郎; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第64回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第64回システム制御情報学会研究発表講演会, オンライン
    20 May 2020
  • 非線形システムに対するinstant iterative learning MPCの提案
    佐藤海斗; 澤田賢治; 井上正樹
    Oral presentation, Japanese, 第64回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第64回システム制御情報学会研究発表講演会, オンライン
    20 May 2020
  • プラトゥーン走行における分散協調オブザーバを用いた位置推定
    若狭拓馬; 武藤僚佑; 澤田賢治
    Oral presentation, Japanese, 第64回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第64回システム制御情報学会研究発表講演会, オンライン
    20 May 2020
  • 航空機の上下加速度に対する有限時間の最悪外乱と最適入力
    福永秀樹; 澤田賢治; 新誠一; 濱田吉郎
    Oral presentation, Japanese, 第7回制御部門マルチシンポジウム予稿集／計測自動制御学会,第7回制御部門マルチシンポジウム, Domestic conference
    05 Mar. 2020
  • 稼働状態を考慮した縮退機能付きコントローラホワイトリストの検討
    澤田賢治; 永谷禎基; 武田健吾
    Oral presentation, Japanese, 第7回制御部門マルチシンポジウム予稿集／計測自動制御学会,第7回制御部門マルチシンポジウム, Domestic conference
    05 Mar. 2020
  • 縮退運転システムおよび協調型ホワイトリストによる制御システムのセキュリティ技術開発
    澤田賢治
    Public discourse, Japanese, SICE制御部門パイオニア技術賞受賞記念講演，MSCS2020, Invited, 計測自動制御学会, Domestic conference
    05 Mar. 2020
  • Human-In-the-Loop Systemによるドライバー個性を反映した自動運転に関する研究
    松下遥香; 佐藤海斗; 佐倉衛; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第7回制御部門マルチシンポジウム予稿集／計測自動制御学会,第7回制御部門マルチシンポジウム, Domestic conference
    03 Mar. 2020
  • 切り替え型ピニング制御を用いた複数車群の経路計画と経路追従
    若狭拓馬; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第7回制御部門マルチシンポジウム予稿集／計測自動制御学会,第7回制御部門マルチシンポジウム, Domestic conference
    03 Mar. 2020
  • 協調型ホワイトリストによる制御システムの異常検知手法
    藤田真太郎; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第7回制御部門マルチシンポジウム予稿集／計測自動制御学会,第7回制御部門マルチシンポジウム, Domestic conference
    03 Mar. 2020
  • 時間オートマトンを用いた第三者監視システムのモデル化
    阪田恒晟; 藤田慎太郎; 澤田賢治; 新誠一
    Oral presentation, Japanese, SCIS2020/SCIS2020予稿集, Domestic conference
    23 Jan. 2020
  • 機械学習による制御システムの運転状態を考慮した異常検知の検証
    長谷川亮太; 澤田賢治; 市川幸宏; 中井綱人
    Oral presentation, Japanese, SCIS2020/SCIS2020予稿集, Domestic conference
    23 Jan. 2020
  • 通信パケットの順序制約を考慮した制御ネットワークのホワイトリスト
    藤田真太郎; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, SCIS2020/SCIS2020予稿集, Domestic conference
    23 Jan. 2020
  • i-パワードエネルギーによるデータ駆動型社会基盤と不具合未然防止
    横川 慎二; 市川 晴久; 澤田賢治; 曽我部東馬; 川喜田祐介
    Oral presentation, Japanese, 横幹連合／第10回横幹連合コンファレンス, Domestic conference
    30 Nov. 2019
  • サイバー攻撃に対する可用性を考慮した第三者監視システム
    阪田恒晟; 藤田真太郎; 澤田賢治; 新 誠一; 前田一平; 細川 嵩
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2019）予稿集／計測自動制御学会,システム・情報部門学術講演会
    25 Nov. 2019
  • エネルギー保存則に着目したプラントモデル検証自動化とモデリングガイドライン
    佐倉 衛; 澤田賢治; 金子 修; 新 誠一; 松田 功
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2019）予稿集／計測自動制御学会,システム・情報部門学術講演会
    25 Nov. 2019
  • Node-REDにおけるアプリケーション開発のための動的プロファイル適用型モデル検証
    新倉拓也; 澤田賢治; 新誠一
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2019）予稿集／計測自動制御学会,システム・情報部門学術講演会
    25 Nov. 2019
  • eneric Transport Modelを用いた航空機の上下加速度 に対する有限時間最悪外乱解析
    福永秀樹; 澤田賢治; 新誠一; 濱田吉郎
    Oral presentation, Japanese, 第62回自動制御連合講演会予稿集／日本機械学会,第62回自動制御連合講演会, Domestic conference
    10 Nov. 2019
  • 車群合流および分離のための切り替え型ピニング制御
    若狭拓馬; 永谷禎基; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第62回自動制御連合講演会予稿集／日本機械学会,第62回自動制御連合講演会, Domestic conference
    09 Nov. 2019
  • クアッドロータの線形化における反復学習的モデル誤差抑制
    佐藤海斗; 藤司純一; 澤田賢治; 市原裕之; 新誠一
    Oral presentation, Japanese, 第62回自動制御連合講演会予稿集／日本機械学会,第62回自動制御連合講演会, Domestic conference
    09 Nov. 2019
  • 協調型ホワイトリストにおけるPLCの縮退運転システム について
    藤田真太郎; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第62回自動制御連合講演会予稿集／日本機械学会,第62回自動制御連合講演会, Domestic conference
    09 Nov. 2019
  • 制御システムセキュリティの研究の始め方：ロボットアームを例題に
    澤田賢治
    Public discourse, Japanese, 第62回自動制御連合講演会ワークショップ：制御理論の最前線とその応用, Invited, 計測自動制御学会, Domestic conference
    08 Nov. 2019
  • 航空機の上下加速度に対する最悪突⾵の⼀解析ーGeneric Transport Modelを⽤い てー
    福永 秀樹; 澤田 賢治; 新 誠一; 濱田 吉郎
    Oral presentation, Japanese, 第57回飛行機シンポジウム, 山口
    17 Oct. 2019
  • 協調型ホワイトリストによる多階層防御システムの実現
    澤田賢治
    Public discourse, Japanese, 計測自動制御学会制御部門，真なるダイナミクスの追求によるシステム制御理論の躍進を目指すシンポジウム2019, Invited, 計測自動制御学会, Domestic conference
    05 Oct. 2019
  • グラフ理論に基づく産業用コントローラのためのホワイトリストの検証手法
    藤田真太郎; 澤田賢治; 新 誠一; 細川 嵩
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成31年電気学会電子・情報・システム部門大会, Domestic conference
    06 Sep. 2019
  • モデルベース開発の為のエネルギー検証自動化
    佐倉 衛; 澤田賢治; 金子 修; 新 誠一; 松田 功
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成31年電気学会電子・情報・システム部門大会, Domestic conference
    06 Sep. 2019
  • 再生可能エネルギーシステムの遠隔制御におけるセキュリティ評価環境の構築
    松崎和賢; 澤田賢治
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成31年電気学会電子・情報・システム部門大会, Domestic conference
    05 Sep. 2019
  • コントローラに対する第三者監視を用いた異常検知技術の提案
    阪田恒晟; 藤田真太郎; 澤田賢治; 新 誠一; 前田一平; 細川 嵩
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成31年電気学会電子・情報・システム部門大会, Domestic conference
    04 Sep. 2019
  • ホワイトリスト研究開発ー協調ホワイトリスト防御システムー
    澤田賢治
    Public discourse, Japanese, 技術研究組合制御システムセキュリティセンター令和元年活動状況報告会, Invited, 技術研究組合制御システムセキュリティセンター, Domestic conference
    28 Jun. 2019
  • コントローラに対するホワイトリスト式サイバー攻撃検知
    澤田賢治
    Public discourse, Japanese, JST，電気通信大学 新技術説明会, Invited, JST, Domestic conference
    14 May 2019
  • MBDのためのエネルギーフローに着目したモデル検証技術
    澤田賢治; 佐倉衛; 金子修; 新誠一; 松田功; 村上徹
    Oral presentation, Japanese, 第6回制御部門マルチシンポジウム予稿集／計測自動制御学会,第6回制御部門マルチシンポジウム, Domestic conference
    09 Mar. 2019
  • シーケンス制御のプログラム安全更新のための基礎検討
    岸田貴光; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第6回制御部門マルチシンポジウム予稿集／計測自動制御学会,第6回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2019
  • 機械学習による産業用制御システムの運転状態分離と推定
    長谷川亮太; 秦康祐; 藤田真太郎; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第6回制御部門マルチシンポジウム予稿集／計測自動制御学会,第6回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2019
  • 落下するクアッドロータ型ドローンのイベントトリガー型モデル予測制御
    佐藤海斗; 藤司純一; 澤田賢治; 市原裕之; 新誠一
    Oral presentation, Japanese, 第6回制御部門マルチシンポジウム予稿集／計測自動制御学会,第6回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2019
  • 車群速度制御のための切り替え型ピニング制御
    若狭拓馬; 永谷禎基; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第6回制御部門マルチシンポジウム予稿集／計測自動制御学会,第6回制御部門マルチシンポジウム, Domestic conference
    07 Mar. 2019
  • ホワイトリスト運用を目的とした産業用制御システムの状態推定に関する検討
    秦康祐; 澤田賢治; 中井綱人; 市川幸宏; 小林信博
    Oral presentation, Japanese, SCIS2019/SCIS2019予稿集, Domestic conference
    23 Jan. 2019
  • 制御モデルに応じたホワイトリスト型攻撃検知手法の提案
    中井綱人; 市川幸宏; 小林信博; 秦康祐; 澤田賢治
    Oral presentation, Japanese, SCIS2019/SCIS2019予稿集, Domestic conference
    23 Jan. 2019
  • 産業用コントローラのホワイトリストの網羅テストについて
    藤田慎太郎; 秦康祐; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, SCIS2019/SCIS2019予稿集, Domestic conference
    23 Jan. 2019
  • サイバーセキュリティと制御
    澤田賢治
    Public discourse, Japanese, 電気学会北海道支部，専門家向け講演会「IoT時代のための次世代システム制御理論」, Invited, 電気学会, Domestic conference
    08 Jan. 2019
  • グラフ列挙による風力・太陽光・蓄電池複合システムの重複グルーピング最適化
    武田健吾; 澤田賢治; 横川慎二; 新誠一
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2018）予稿集／計測自動制御学会,システム・情報部門学術講演会
    27 Nov. 2018
  • 組み込みシステムの周期性に着目した更新プログラムの安全性検証
    岸田貴光; 澤田賢治; 新誠一
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2018）予稿集／計測自動制御学会,システム・情報部門学術講演会
    27 Nov. 2018
  • 誤り訂正符号を用いた PLC 改ざん検知・修正アルゴリズム
    川上重太; 澤田賢治; 新誠一
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2018）予稿集／計測自動制御学会,システム・情報部門学術講演会
    27 Nov. 2018
  • 経路計画手法に基づく事象駆動型最適制御
    永谷禎基; 澤田賢治; 小林孝一; 新誠一
    Oral presentation, Japanese, 第61回自動制御連合講演会予稿集／システム制御情報学会,第61回自動制御連合講演会, Domestic conference
    18 Nov. 2018
  • 産業用コントローラに対するホワイトリストの検証方法
    藤田真太郎; 秦康祐; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第61回自動制御連合講演会予稿集／システム制御情報学会,第61回自動制御連合講演会, Domestic conference
    18 Nov. 2018
  • 複数のCAEを用いたMBDの為のモデル検証
    佐倉衛; 澤田賢治; 金子修; 新誠一
    Oral presentation, Japanese, 第61回自動制御連合講演会予稿集／システム制御情報学会,第61回自動制御連合講演会, Domestic conference
    17 Nov. 2018
  • 航空機の縦運動における最悪突風に関する一解析 - Generic Transport Modelを用いて -
    福永 秀樹; 澤田 賢治; 新 誠一; 濱田 吉郎
    Oral presentation, Japanese, 第56回飛行機シンポジウム, 山形
    15 Nov. 2018
  • 連続的に進化する超スマート社会におけるCyber/Physical連携とプラットフォーム
    金子修; 澤田賢治
    Oral presentation, Japanese, 横幹連合／第9回横幹連合コンファレンス, Domestic conference
    07 Oct. 2018
  • グルーピング列挙による風力・太陽光・蓄電池複合システムの重複グルーピング最適化
    武田健吾; 澤田賢治; 横川慎二; 新誠一
    Oral presentation, Japanese, 横幹連合／第9回横幹連合コンファレンス, Domestic conference
    06 Oct. 2018
  • サイバーセキュリティと制御
    澤田賢治
    Public discourse, Japanese, SICE制御部門ワークショップ「超スマート社会実現のためのシステム制御技術」, Invited, 計測自動制御学会（SICE）, Domestic conference
    13 Sep. 2018
  • 風力・太陽光・蓄電池複合システムの重複グルーピング最適化の検討
    武田健吾; 澤田賢治; 横川慎二; 新誠一
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成30年電気学会電子・情報・システム部門大会, Domestic conference
    06 Sep. 2018
  • 組み込みシステムのプログラム安全更新のための基礎検討
    岸田貴光; 澤田賢治; 新 誠一
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成30年電気学会電子・情報・システム部門大会, Domestic conference
    06 Sep. 2018
  • エッジコンピューティングにおける誤り訂正符号を用いた異常検知・修正
    川上重太; 澤田賢治; 新 誠一
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成30年電気学会電子・情報・システム部門大会, Domestic conference
    06 Sep. 2018
  • 非周期的サンプル値制御系における自己駆動型最適制御
    永谷禎基; 澤田賢治; 新 誠一
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成30年電気学会電子・情報・システム部門大会, Domestic conference
    06 Sep. 2018
  • 産業用制御システムのためのホワイトリスト型振る舞い検知
    澤田賢治; 細川嵩
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成30年電気学会電子・情報・システム部門大会, Domestic conference
    05 Sep. 2018
  • モデルベース開発と制御システムセキュリティ
    澤田賢治
    Public discourse, Japanese, IoT導入工場における「セキュリティ」対策～サイバー攻撃による生産・作業停止を防ぐために～, Invited, 情報技術協会, Domestic conference
    27 Aug. 2018
  • ハイブリッド自動車のエネルギー検証の為のモデル階層化
    佐倉 衛; 田村 健太; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第62回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第62回システム制御情報学会研究発表講演会, 京都
    18 May 2018
  • Generic Transport Modelを用いた航空機の縦揺れ運動に関わる最悪外乱の一解析
    福永 秀樹; 澤田 賢治; 新 誠一; 濱田 吉郎
    Oral presentation, Japanese, 第62回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第62回システム制御情報学会研究発表講演会, 京都
    16 May 2018
  • 個体識別情報に基づく自己組織化ロボットの群れ形成・維持アルゴリズム
    所附 達幸; 望月 優加理; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第62回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第62回システム制御情報学会研究発表講演会, 京都
    16 May 2018
  • 制御システムのホワイトリスト：多階層検知と協調動作
    澤田賢治
    Public discourse, Japanese, 計測自動制御学会制御部門MSCS2018, Invited, 計測自動制御学会制御部門, Domestic conference
    10 Mar. 2018
  • PLCのためのホワイトリスト式異常検知技術
    秦康祐; 望月明典; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第5回制御部門マルチシンポジウム予稿集／計測自動制御学会,第5回制御部門マルチシンポジウム, Domestic conference
    09 Mar. 2018
  • 風力・太陽光・蓄電池複合システムにおけるグルーピング最適化の検証
    武田 健吾; 澤田 賢治; 横川 慎二; 新 誠一
    Oral presentation, Japanese, 第30回自律分散シンポジウム／計測自動制御学会,第30回自律分散シンポジウム, Domestic conference
    28 Jan. 2018
  • ホワイトリスト運用を目的とした制御システムの状態分離アルゴリズムの検討
    秦康祐; 望月明典; 澤田賢治; 中井綱人; 市川幸宏; 小林信博
    Oral presentation, Japanese, SCIS2018/SCIS2018予稿集, Domestic conference
    24 Jan. 2018
  • 制御システムのテストベッド構築と制御特性に着目した攻撃検知手法の提案
    中井綱人; 市川幸宏; 小林信博; 秦康祐; 望月明典; 澤田賢治
    Oral presentation, Japanese, SCIS2018/SCIS2018予稿集, Domestic conference
    24 Jan. 2018
  • 産業用コントローラに対するホワイトリストの自動生成手法の検討
    藤田慎太郎; 秦康祐; 望月明典; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, SCIS2018/SCIS2018予稿集, Domestic conference
    24 Jan. 2018
  • 分散協調制御型探索システムにおけるデッドロック解決のための通信手段の検討
    望月優加理; 澤田賢治; 新誠一
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2017）予稿集／計測自動制御学会,システム・情報部門学術講演会
    26 Nov. 2017
  • 合意制御における誤り訂正符号を用いた改ざん検知のための検査ビット共有化
    川上重太; 澤田賢治; 新誠一
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2017）予稿集／計測自動制御学会,システム・情報部門学術講演会
    26 Nov. 2017
  • 制御系のサイバーセキュリティのための協調型ホワイトリスト
    澤田賢治
    Invited oral presentation, Japanese, 計測自動制御学会産業応用部門2017年度大会, Invited, 計測自動制御学会産業応用部門, Domestic conference
    20 Nov. 2017
  • ペトリネットを用いた渋滞現象のモデル化と動特性解析
    渡井 翔太; 澤田 賢治; 市原 裕之
    Oral presentation, Japanese, 第60回自動制御連合講演会予稿集／計測自動制御学会,第60回自動制御連合講演会, Domestic conference
    12 Nov. 2017
  • プラントライフサイクルによる協調ホワイトリスト防御の検討
    細川 嵩; 茄子川 慈苑; 木内 誠; 市川 幸宏; 澤田 賢治
    Oral presentation, Japanese, 第60回自動制御連合講演会予稿集／計測自動制御学会,第60回自動制御連合講演会, Domestic conference
    10 Nov. 2017
  • OpenPLCを用いた制御システムへのホワイトリスト式検知技術の実装と検証
    藤田 真太郎; 秦 康祐; 望月 明典; 澤田 賢治; 新 誠一; 細川 嵩
    Oral presentation, Japanese, 第60回自動制御連合講演会予稿集／計測自動制御学会,第60回自動制御連合講演会, Domestic conference
    10 Nov. 2017
  • PLCに対するホワイトリスト式攻撃検知技術の開発
    望月 明典; 澤田 賢治; 新 誠一; 細川 嵩
    Oral presentation, Japanese, 第60回自動制御連合講演会予稿集／計測自動制御学会,第60回自動制御連合講演会, Domestic conference
    10 Nov. 2017
  • マルチエージェントシステムによる迷路の協調探索における流量解析
    望月 優加理; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第60回自動制御連合講演会予稿集／計測自動制御学会,第60回自動制御連合講演会, Domestic conference
    10 Nov. 2017
  • ZDDを用いた風力・太陽光・蓄電池複合システムのグルーピング最適化
    武田 健吾; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第60回自動制御連合講演会予稿集／計測自動制御学会,第60回自動制御連合講演会, Domestic conference
    10 Nov. 2017
  • Society5.0時代に向けたサイバーセキュリティの動向、現状と課題
    澤田賢治
    Invited oral presentation, Japanese, 環境装置部会環境ビジネス委員会, Invited, 一般社団法人 日本産業機械工業会, Domestic conference
    20 Oct. 2017
  • 複数の家庭におけるLIB併用型SOFCの自律協調エネルギーシステムの一考察
    桑名俊輔; 澤田賢治; 新誠一
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成29年電気学会電子・情報・システム部門大会, Domestic conference
    07 Sep. 2017
  • 風力・太陽光・蓄電池融合システムの重複分散運用の検討
    武田健吾; 澤田賢治; 新誠一
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成29年電気学会電子・情報・システム部門大会, Domestic conference
    07 Sep. 2017
  • ホワイトリスト運用のための複数の制御機器情報に基づいた運転状態の推定
    秦康祐; 望月明典; 澤田賢治; 中井綱人; 山口晃由; 小林信博
    Oral presentation, Japanese, DICOMO2017/DICOMO2017予稿集, Domestic conference
    29 Jun. 2017
  • OpenPLCを用いたロボットアーム制御システムの構築について
    藤田真太郎; 秦康祐; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 電気学会制御研究会/制御研究会予稿集, Domestic conference
    24 Jun. 2017
  • Graphillion に基づく制御ソフトウェアの可用性検査
    塚田健人; 岸田貴光; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第61回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第61回システム制御情報学会研究発表講演会, 京都
    25 May 2017
  • 通信可能範囲を考慮した分散協調制御システムに基づく迷路探索
    望月 優加理; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第61回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第61回システム制御情報学会研究発表講演会, 京都
    25 May 2017
  • 誤り訂正符号を用いたリーダー・フォロワー合意におけるビザンチン将軍問題
    川上 重太; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第61回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第61回システム制御情報学会研究発表講演会, 京都
    25 May 2017
  • 場を介した情報共有による自己組織化ロボットの役割切替
    植田 雄太; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第61回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第61回システム制御情報学会研究発表講演会, 京都
    24 May 2017
  • 多重解像度補間メッシュに基づく経路探索手法
    永谷禎貴; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第163回アルゴリズム研究会／電子情報通信学会技術研究報告, 情報処理学会・電子情報通信学会, 長崎, Domestic conference
    12 May 2017
  • カルマン正準分解に基づいたソフトウェアのモデル検査について
    塚田健人; 岸田貴光; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第4回制御部門マルチシンポジウム予稿集／計測自動制御学会,第4回制御部門マルチシンポジウム
    08 Mar. 2017
  • カルマン正準分解を用いた自律移動ロボットの無瞬断更新に関する研究
    岸田貴光; 塚田健人; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第4回制御部門マルチシンポジウム予稿集／計測自動制御学会,第4回制御部門マルチシンポジウム
    07 Mar. 2017
  • 運転状態の推定に基づく協調型縮退運転システム
    佐々木翼; 嶋崎亜希; 望月明典; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第4回制御部門マルチシンポジウム予稿集／計測自動制御学会,第4回制御部門マルチシンポジウム
    07 Mar. 2017
  • PLCのためのホワイトリスト式検知技術に関する検討
    望月明典; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第4回制御部門マルチシンポジウム予稿集／計測自動制御学会,第4回制御部門マルチシンポジウム
    07 Mar. 2017
  • 自己駆動粒子モデルによる輻輳モニタリングルータのモデル化と制御
    渡井翔太; 澤田賢治; 市原裕之
    Oral presentation, Japanese, 第4回制御部門マルチシンポジウム予稿集／計測自動制御学会,第4回制御部門マルチシンポジウム
    07 Mar. 2017
  • 制御システムのためのモデルベースセキュリティ技術
    澤田賢治
    Invited oral presentation, Japanese, 制御システムセキュリティカンファレンス2017, Invited, 一般社団法人JPCERT コーディネーションセンター, Domestic conference
    21 Feb. 2017
  • プロセス制御システムのライフサイクルに基づいたホワイトリスト
    秦康祐; 佐々木翼; 澤田賢治; 中井綱人; 山口晃由; 小林信博
    Oral presentation, Japanese, SCIS2017/SCIS2017予稿集, Domestic conference
    24 Jan. 2017
  • ライフサイクルに応じた産業用制御システム向けホワイトリスト型侵入検知システムのモデル化とシミュレーション評価
    中井綱人; 山口晃由; 清水孝一; 小林信博; 秦康祐; 佐々木翼; 澤田賢治
    Oral presentation, Japanese, SCIS2017/SCIS2017予稿集, Domestic conference
    24 Jan. 2017
  • EddyStone-URLを用いた行方不明者捜索システムの開発
    高橋すみか; 上野里奈; 川喜田佑介; 澤田賢治; 新 誠一; 市川晴久
    Oral presentation, Japanese, 知的環境とセンサネットワーク研究会/信学技法, Domestic conference
    19 Jan. 2017
  • 異なる役割を持つエージェント群による迷路探索の研究
    望月優加理; 澤田賢治; 新誠一
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2016）予稿集／計測自動制御学会,システム・情報部門学術講演会
    08 Dec. 2016
  • 原子間ポテンシャルに基づく車群維持条件の考察
    成田匠; 新誠一; 澤田賢治
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2016）予稿集／計測自動制御学会,システム・情報部門学術講演会
    08 Dec. 2016
  • LIB併用型SOFCによる家庭間協調エネルギーシステムの一考察
    桑名俊輔; 澤田賢治; 新誠一
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2016）予稿集／計測自動制御学会,システム・情報部門学術講演会
    08 Dec. 2016
  • Crowd Tracing: 第三者のスマートフォンを介したBLEデバイス遠隔制御法
    上野里奈; 高橋すみか; 鈴木博貴; 澤田賢治; 新 誠一; 川喜田佑介; 市川晴久
    Oral presentation, Japanese, 電子情報通信学会 知的環境とセンサネットワーク(ASN)研究会 カンボジアワークショップ, Domestic conference
    06 Dec. 2016
  • 復帰機能を備えたモデルベース縮退運転システムの実現
    佐々木翼; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第59回自動制御連合講演会予稿集／機械学会,第59回自動制御連合講演会, Domestic conference
    12 Nov. 2016
  • 制御システムの第三者監視装置のためのモデルベース解析
    望月明典; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第59回自動制御連合講演会予稿集／機械学会,第59回自動制御連合講演会, Domestic conference
    12 Nov. 2016
  • 複数の機器の連携とプラントのライフサイクルを考慮した防御技術の検討
    市川幸宏; 細川嵩; 澤田賢治
    Oral presentation, Japanese, 第59回自動制御連合講演会予稿集／機械学会,第59回自動制御連合講演会, Domestic conference
    12 Nov. 2016
  • Quantized control based on invariant set analysis
    Kenji Sawada
    Public discourse, English, SÉMINAIRE DE L'EQUIPE MAC, Invited, LAAS-CNRS, TOULOUSE, FRANCE, International conference
    29 Sep. 2016
  • 電磁比例弁内のクーロン摩擦力に起因した自励振動の解析
    山藤勝彦; 山本建; 澤田賢治
    Oral presentation, Japanese, 2016年度年次大会予稿集／日本機械学会,2016年度年次大会
    14 Sep. 2016
  • 役割切替を備えた自己組織化ロボットの制御：隊列移動における機体追加の実現
    植田雄太; 澤田賢治; 新誠一
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成28年電気学会電子・情報・システム部門大会, Domestic conference
    01 Sep. 2016
  • ペトリネットに基づく制御システムのモデルベースセキュリティインシデント解析
    望月明典; 澤田賢治; 新誠一; 細川嵩; 奥村剛
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成28年電気学会電子・情報・システム部門大会, Domestic conference
    01 Sep. 2016
  • 制御システムのためのモデルベースセキュリティ技術
    澤田賢治
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成28年電気学会電子・情報・システム部門大会, Domestic conference
    01 Sep. 2016
  • リチウムイオン電池を併用した家庭用燃料電池の最適運用問題
    桑名俊輔; 澤田賢治; 新誠一
    Oral presentation, Japanese, 電子・情報・システム部門大会予稿集／平成28年電気学会電子・情報・システム部門大会, Domestic conference
    31 Aug. 2016
  • 自動車の前後制動力配分の数値最適化に関する研究
    田村健太; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第60回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第60回システム制御情報学会研究発表講演会
    27 May 2016
  • 制御系セキュリティのためのモデルベース技術
    澤田賢治
    Invited oral presentation, Japanese, 2016年5月高信頼制御通信研究会, 高信頼制御通信研究会,ヘルスケア・医療情報通信技術研究会, Domestic conference
    13 May 2016
  • カルマン正準分解に基づくルールベース縮退運転システム
    佐々木翼; 塚田健人; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第3回制御部門マルチシンポジウム予稿集／計測自動制御学会,第3回制御部門マルチシンポジウム
    08 Mar. 2016
  • 自律協調ロボット群による複数目的地探索の研究
    望月優加理; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第3回制御部門マルチシンポジウム予稿集／計測自動制御学会,第3回制御部門マルチシンポジウム
    08 Mar. 2016
  • 同時摂動法と粒子群最適化によるハイブリッド自動車のシステム設計
    宮本健太郎; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第3回制御部門マルチシンポジウム予稿集／計測自動制御学会,第3回制御部門マルチシンポジウム
    08 Mar. 2016
  • 暗号化制御則のリアルタイム性に対する実験的考察
    長澤和哉; 小木曽公尚; 澤田賢治
    Oral presentation, Japanese, 第3回制御部門マルチシンポジウム予稿集／計測自動制御学会,第3回制御部門マルチシンポジウム
    08 Mar. 2016
  • ルールベース縮退運転システムを用いたサイバーインシデント検出
    佐々木翼; 塚田健人; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第59回離散事象システム研究会予稿集／計測自動制御学会,第59回離散事象システム研究会
    04 Mar. 2016
  • ネットワーク化制御系に対する双線形オブザーバを用いたモデルベース縮退運転の実現
    佐々木翼; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第58回自動制御連合講演会予稿集／システム制御情報学会,第58回自動制御連合講演会, Domestic conference
    14 Nov. 2015
  • カルマン正準分解を用いたモデル検査のためのツール連携について
    塚田健人; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第58回自動制御連合講演会予稿集／システム制御情報学会,第58回自動制御連合講演会, Domestic conference
    14 Nov. 2015
  • 役割切替を備えた自己組織化ロボットの制御：2列隊列移動の場合
    植田雄太; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第58回自動制御連合講演会予稿集／システム制御情報学会,第58回自動制御連合講演会, Domestic conference
    14 Nov. 2015
  • Model-based Fall Back Control for Cybersecurity
    Kenji Sawada
    Invited oral presentation, English, 2015 Netherlands-Japan Cyber Security Conference, Invited, ENCS, CSSC, UEC Tokyo (i-PERC), Netherlands Embassy Tokyo, Chofu, Tokyo, Japan, About Conference: The Netherlands and Japan have a common view to tackle the increasing cyber-attacks on critical infrastructures and keep up with finding technological cyber security solutions. This is the first cyber security conference in Tokyo organized by ENCS (European Network for Cyber Security) and CSSC (Control System Security Center), which have agreed to cooperate on R&D collaborations with cyber security on critical infrastructure since 2013. Its target is to find possible research collaborations between NL and JP., International conference
    12 Nov. 2015
  • 通信制御系に対するモデルベース縮退運転システム
    佐々木翼; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, インターネットコンファレンス2015論文集／インターネットコンファレンス2015, Domestic conference
    13 Oct. 2015
  • 可動型多眼カメラによる自由視点映像生成
    山田俊輔; 高橋桂太; 澤田賢治; パナヒプル テヘラニ メヒルダド; 藤井俊彰
    Oral presentation, Japanese, 第21回画像センシングシンポジウム（SSII）／画像センシング技術研究会, Domestic conference
    11 Jun. 2015
  • 役割切替を備えた自己組織化ロボットの制御に関する研究
    植田雄太; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第59回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第59回システム制御情報学会研究発表講演会
    21 May 2015
  • ネットワーク制御系に対するモデルベース縮退運転の実現
    佐々木翼; 澤田賢治; 新誠一; 細川嵩
    Oral presentation, Japanese, 第59回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第59回システム制御情報学会研究発表講演会
    21 May 2015
  • カルマン正準分解を用いたソフトウェアのモデル検査に関する研究
    塚田健人; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第59回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第59回システム制御情報学会研究発表講演会
    21 May 2015
  • モデル予測制御を用いた半導体の搬送スケジューリングの高速化
    中村亮介; 澤田賢治; 新誠一; 熊谷賢治; 米田尚登
    Oral presentation, Japanese, 第2回制御部門マルチシンポジウム予稿集／計測自動制御学会,第1回制御部門マルチシンポジウム
    07 Mar. 2015
  • 和分型状態方程式に基づく適応オブザーバ構成
    澤田賢治; 新誠一
    Oral presentation, Japanese, 第57回自動制御連合講演会予稿集／計測自動制御学会,第57回自動制御連合講演会, Domestic conference
    11 Nov. 2014
  • 並列分散処理のための整数計画法に基づいたタスクスケジューリング
    山崎仁史; 小西克巳; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第57回自動制御連合講演会予稿集／計測自動制御学会,第57回自動制御連合講演会, Domestic conference
    11 Nov. 2014
  • RSA暗号に基づくネットワーク制御系のセキュリティ強化
    藤田貴大; 澤田賢治; 小木曽公尚; 新誠一
    Oral presentation, Japanese, 第57回自動制御連合講演会予稿集／計測自動制御学会,第57回自動制御連合講演会, Domestic conference
    11 Nov. 2014
  • 入出力量子化システムに対するモデル追従型制御
    澤田賢治; 新誠一
    Oral presentation, Japanese, 第57回自動制御連合講演会予稿集／計測自動制御学会,第57回自動制御連合講演会, Domestic conference
    10 Nov. 2014
  • ウェーブレット変換を用いた遠心片持ちポンプの羽根車が有する羽根の枚数推定
    吉川尚孝; 新誠一; 澤田賢治
    Oral presentation, Japanese, 第７回ウェーブレット変換およびその応用に関するワークショップ予稿集／豊橋技術科学大学ウェーブレット解析・応用研究会ウェーブレット変換およびその応用に関するワークショップ, Domestic conference
    Oct. 2014
  • モデル予測制御を用いた自律無人搬送車のタスク割当てと経路計画の動的最適化
    中村亮介; 澤田賢治; 新誠一; 熊谷賢治; 米田尚登
    Oral presentation, Japanese, 第1回制御部門マルチシンポジウム予稿集／計測自動制御学会,第1回制御部門マルチシンポジウム
    05 Mar. 2014
  • 変速機における切換型制御器の設計条件に関する研究
    橋口真太郎; 澤田賢治; 新誠一; 山藤勝彦; 山本建
    Oral presentation, Japanese, 第56回自動制御連合講演会予稿集／日本機械学会,第56回自動制御連合講演会
    Nov. 2013
  • クラスター解析を用いたハイブリット自動車の走行データ処理
    小松崎康平; 新誠一; 澤田賢治
    Oral presentation, Japanese, 第56回自動制御連合講演会予稿集／日本機械学会,第56回自動制御連合講演会
    Nov. 2013
  • 和分型適応オブザーバを用いたエアコンの適応学習
    柳川遼; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第56回自動制御連合講演会予稿集／日本機械学会,第56回自動制御連合講演会
    Nov. 2013
  • H∞制御を用いたクラッチジャダーの抑制
    山藤勝彦; 山本建; 橋本真; 新誠一; 澤田賢治
    Oral presentation, Japanese, 2013年度年次大会予稿集／日本機械学会,2013年度年次大会
    Sep. 2013
  • 自律無人搬送台車への連続時間有限整定制御器の実装方法の研究
    小坂 匠平; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第13回制御部門大会予稿集／計測自動制御学会,第13回制御部門大会
    Mar. 2013
  • 情報家電の制御アルゴリズムと家電連携システムに関する研究
    柳川遼; 坪井一晃; 増井進太郎; 楊デイ; 澤田賢治; 新誠一
    Oral presentation, Japanese, 第13回制御部門大会予稿集／計測自動制御学会,第13回制御部門大会
    Mar. 2013
  • AGV搬送系のMLDシステム表現とその評価について（ポスター）
    中村亮介; 澤田賢治; 新誠一; 熊谷賢治; 米田尚登
    Oral presentation, Japanese, 第13回制御部門大会予稿集／計測自動制御学会,第13回制御部門大会
    Mar. 2013
  • AGV搬送系のMLDシステム表現とその評価について（口頭発表）
    中村亮介; 澤田賢治; 新誠一; 熊谷賢治; 米田尚登
    Oral presentation, Japanese, 第13回制御部門大会予稿集／計測自動制御学会,第13回制御部門大会
    Mar. 2013
  • 数値最適化に基づく連続時間型量子化制御系の一構成法
    澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第55回自動制御連合講演会予稿集／システム情報学会,第55回自動制御連合講演会
    Nov. 2012
  • 固定トレース法を用いたエアコンの適応学習の研究
    柳川 遼(U; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第56回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第56回システム制御情報学会研究発表講演会
    May 2012
  • 離散値入力系に対する出力フィードバック制御器の一構成
    澤田 賢治
    Oral presentation, Japanese, 第56回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第56回システム制御情報学会研究発表講演会
    May 2012
  • AGVに対する連続時間型ロバスト有限整定サーボ系の実装検討
    井川 達也; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第12回制御部門大会予稿集／計測自動制御学会,第12回制御部門大会
    Mar. 2012
  • 通信容量制約を満足する動的量子化器の出力可到達性に基づいた性能改善
    海部 静; 岡島 寛; 澤田 賢治; 松永 信智
    Oral presentation, Japanese, 第54回自動制御連合講演会予稿集／計測自動制御学会,第54回自動制御連合講演会
    Nov. 2011
  • 数値最適化に基づく量子化制御
    澤田賢治
    Others, Japanese, 計測自動制御学会北陸支部講演会, 計測自動制御学会北陸支部
    Oct. 2011
  • むだ時間を有する離散値入力型システムに対する連続時間動的量子化器
    澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第40回制御理論シンポジウム予稿集／計測自動制御学会,第40回制御理論シンポジウム
    Sep. 2011
  • プリント基板における最短検査経路長の近似計算に関する研究
    林田 慶(U; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第55回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第55回システム制御情報学会研究発表講演会
    May 2011
  • 情報家電のネットワーク構造と数値最適化に関する研究
    原田 亮(U; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第55回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第55回システム制御情報学会研究発表講演会
    May 2011
  • 0-1整数計画法に基づくAGV搬送系の最適化
    杉本 美穂子; 澤田 賢治; 新 誠一; 米田 尚登
    Oral presentation, Japanese, 第11回制御部門大会予稿集／計測自動制御学会,第11回制御部門大会
    Mar. 2011
  • 連続時間動的量子化器の一設計法
    澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第11回制御部門大会予稿集／計測自動制御学会,第11回制御部門大会
    Mar. 2011
  • PLCによる自律分散制御の研究
    仲山浩太郎; 澤田 賢治; 新 誠一
    Oral presentation, Japanese, システム・情報部門 第23回自律分散システムシンポジウム／計測自動制御学会,システム・情報部門 第23回自律分散システムシンポジウム
    Jan. 2011
  • MLD表現に基づく搬送システムの最適化
    澤田 賢治; 杉本 美穂子; 新 誠一; 米田 尚登
    Oral presentation, Japanese, システム・情報部門学術講演会（SSI2010）予稿集／計測自動制御学会,システム・情報部門学術講演会
    Nov. 2010
  • 半導体搬送用台車のモデリングとキャリブレーション
    澤田賢治; 田中香介; 新誠一; 熊谷 賢治; 米田尚登
    Others, Japanese, DoE カンファレンス 2010 - Model-based development and calibration for automobile controls, IAV株式会社
    Nov. 2010
  • 通信容量制約に基づくMIMO系に対する動的量子化器設計
    岡島 寛; 澤田 賢治; 松永 信智; 南 裕樹
    Oral presentation, Japanese, 第39回制御理論シンポジウム予稿集／計測自動制御学会,第39回制御理論シンポジウム
    Sep. 2010
  • 不変集合解析に基づく分散型動的量子化器
    澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第39回制御理論シンポジウム予稿集／計測自動制御学会,第39回制御理論シンポジウム
    Sep. 2010
  • 搬送システムの動的モデリングと最適化に関する研究
    三枝 真希; 澤田 賢治; 米田尚登; 新 誠一
    Oral presentation, Japanese, 第54回システム制御情報学会研究発表講演会予稿集／システム制御情報学会,第54回システム制御情報学会研究発表講演会
    May 2010
  • 半導体搬送用台車のモデリングとキャリブレーション
    田中 香介; 澤田 賢治; 新 誠一; 熊谷 賢治; 米田尚登
    Oral presentation, Japanese, 第１回プラントモデリング部会シンポジウム予稿集／計測自動制御学会,第１回プラントモデリング部会シンポジウム
    Apr. 2010
  • 動的量子化器に対する複数のセクター条件に基づく一解析法
    澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第10回制御部門大会予稿集／計測自動制御学会,第10回制御部門大会
    Mar. 2010
  • 通信容量制約下における動的量子化器の統合設計
    岡島 寛; 澤田 賢治; 松永 信智
    Oral presentation, Japanese, 第10回制御部門大会予稿集／計測自動制御学会,第10回制御部門大会
    Mar. 2010
  • SISOシステムに対する不変集合解析に基づく動的量子化器設計
    澤田 賢治; 新 誠一
    Oral presentation, Japanese, 第52回自動制御連合講演会予稿集／システム制御情報学会,第52回自動制御連合講演会
    Nov. 2009
  • 信号の量子化レベル数を陽に扱った量子化幅の最適設計
    岡島 寛; 松永 信智; 澤田 賢治
    Oral presentation, Japanese, 第38回制御理論シンポジウム予稿集／計測自動制御学会,第38回制御理論シンポジウム
    Sep. 2009
  • ゲインスケジューリングを用いた3値のPWM型制御入力に基づく安定化制御
    藤澤 健久; 澤田 賢治; 浅井 徹
    Oral presentation, Japanese, 第37回制御理論シンポジウム予稿集／計測自動制御学会,第37回制御理論シンポジウム
    Sep. 2008
  • 入力飽和を有する目標値追従制御系における低次制御器の一設計方法
    澤田賢治; 木山健
    Oral presentation, Japanese, 第8回制御部門大会予稿集／計測自動制御学会,第8回制御部門大会
    Mar. 2008
  • L∞有界外乱を受ける入力飽和を有する連続時間制御系のL∞性能解析/設計
    澤田賢治; 木山健
    Oral presentation, Japanese, 第7回制御部門大会予稿集／計測自動制御学会,第7回制御部門大会
    Mar. 2007
  • 出力レギュレーション型Anti-windup制御系の一設計方法
    澤田賢治; 木山健
    Oral presentation, Japanese, 第6回制御部門大会予稿集／計測自動制御学会,第6回制御部門大会
    Jun. 2006
  • 飽和を有する離散時間系の解析および設計の各条件の関連性について
    澤田賢治; 木山健
    Oral presentation, English, 第33回制御理論シンポジウム予稿集／計測自動制御学会,第33回制御理論シンポジウム
    Nov. 2004
  • LMI-based anti-windup control system synthesis
    木山健; 澤田賢治
    Oral presentation, English, 第4回制御部門大会予稿集／計測自動制御学会,第4回制御部門大会
    May 2004

Courses

  • 学域特別講義B（JAPIA寄附講座）
    2021 - Present
    電気通信大学
  • 知能機械工学実験
    Oct. 2018 - Present
    The University of Electro-Communications
  • 組込み制御システム学特論
    Oct. 2018 - Present
    The University of Electro-Communications
  • Introduction to Control Theory
    Apr. 2018 - Present
    The University of Electro-Communications
  • プログラミング演習2
    Apr. 2011 - Present
    明治大学
  • プログラミング演習1
    Apr. 2011 - Present
    明治大学
  • ディジタル制御特論
    2020 - 2024
    中央大学
  • AI・セキュリティ人材育成プログラム「ネットワークセキュリティ」
    2021 - 2023
    The University of Electro-Communications
  • システム制御特論
    2020 - 2023
    中央大学
  • 基礎科学実験A
    2013 - 2015
    The University of Electro-Communications
  • システム工学実験「制御工学」（夜間・昼間）
    2009 - 2014
    The University of Electro-Communications
  • 基礎科学実験A
    2010 - 2011
    The University of Electro-Communications
  • 工学基礎演習第二
    2009
  • システム工学基礎セミナー
    2009
  • 物理学概論第二
    The University of Electro-Communications
  • 大学院技術英語（M専攻）
    The University of Electro-Communications

Affiliated academic society

  • IEEE Control System Society
  • IEEE Industrial Electronics Society
  • IEEE Robotics and Automation Society
  • 電気学会
  • 電子情報通信学会
  • IEEE Systems, Man and Cybernetics Society
  • 日本機械学会
  • 計測自動制御学会
  • システム制御情報学会

Research Themes

  • Security Assessment and Countermeasures for AI-Driven Cyber-Physical Systems
    森達哉; 佐久間淳; 菅原健; 澤田賢治; 吉岡健太郎
    JST, CREST, Waseda University, 「基礎理論とシステム基盤技術の融合によるSociety 5.0のための基盤ソフトウェアの創出」領域, 23829666
    Oct. 2023 - Mar. 2029
  • 小規模創電・蓄電の統合運用を可能にするインターネット型電力プラットフォーム
    横川 慎二; 川喜田 佑介; 早瀬 修二; 澤田 賢治; 曽我部 東馬; 中山 舜民; 戸辺 義人
    日本学術振興会, 科学研究費助成事業, 電気通信大学, 基盤研究(B), Coinvestigator, 23H01636
    Apr. 2023 - Mar. 2027
  • 最適化プロセスの動特性を考慮したモデル状態予測・推定統合制御のアルゴリズム設計
    市原 裕之; 澤田 賢治
    日本学術振興会, 科学研究費助成事業, 明治大学, 基盤研究(C), Coinvestigator, 23K03915
    Apr. 2023 - Mar. 2026
  • 暗号化制御系におけるセキュリティメトリクスの顕在化
    小木曽 公尚; 金子 修; 畑 秀明; 和田 洋一郎; 小泉 憲裕; 定本 知徳; 宮嵜 哲郎; 澤田 賢治; 猪俣 敦夫
    日本学術振興会, 科学研究費助成事業, 電気通信大学, 基盤研究(B), Coinvestigator, 22H01509
    Apr. 2022 - Mar. 2025
  • Understanding the impact of adversarial inputs on autonomous driving systems and developing countermeasure technologies
    森 達哉; 菅原 健; 澤田 賢治; 佐久間 淳
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Waseda University, Grant-in-Aid for Scientific Research (A), Coinvestigator, 22H00519
    Apr. 2022 - Mar. 2025
  • 協調多層型防御技術のための事象駆動型制御理論の構築
    澤田賢治
    Principal investigator
    01 Apr. 2019 - 31 Mar. 2023
  • スパースセンシングの制御系設計への展開
    澤田賢治
    Principal investigator
    01 Apr. 2019 - 31 Mar. 2023
  • 有限時間可到達集合に基づく不連続システムの解析と設計に関する研究
    澤田賢治
    Principal investigator
    01 Apr. 2019 - 31 Mar. 2022
  • 協調給電による再生可能エネルギー指向自律分散グリッドの開発と実証
    横川 慎二
    30 Jun. 2017 - 31 Mar. 2021
  • 事象駆動型量子化制御に基づく通信制御系の縮退運転アルゴリズム
    澤田賢治
    Principal investigator
    2015 - 2017
  • 数値最適化に基づくテーブルルックアップ型切換制御系設計に関する研究
    市原裕之
    2014 - 2016
  • 量子化制御に基づく電子制御用ソフトウエアの安定化アルゴリズム
    2012 - 2014
  • 拘束システムに対する有限整定制御の構造に関する研究－一般化セクター条件の活用
    2010 - 2011

Others

  • IIFES2022（...
    IIFES2022（2022/1/26-2/25）にてアカデミックでオンライ展示
    2022 - 2022
  • SEMICON Ja...
    SEMICON Japan 2021，12/15-17，現地展示
    2021 - 2021
  • イノベーション・ジャ...
    イノベーション・ジャパン2020，2020/09/28～11/30 オンライン展示
    2020 - 2020
  • SIP／重要インフラ...
    SIP／重要インフラ等におけるサイバーセキュリティの確保 シンポジウム2019 大阪開催 2020/02/07 展示出展
    2020 - 2020
  • SIP／重要インフラ...
    SIP／重要インフラ等におけるサイバーセキュリティの確保 シンポジウム2019 東京開催 2020/01/24 展示出展
    2020 - 2020
  • IIFES2019，...
    IIFES2019，2019/11/27-29 アカデミック出展
    2019 - 2019
  • SIP／重要インフラ...
    SIP／重要インフラ等におけるサイバーセキュリティの確保 シンポジウム2018，2018/10/05 展示出展
    2018 - 2018
  • イノベーション・ジャ...
    イノベーション・ジャパン2018，2018/08/30～31
    2018 - 2018
  • SIP／重要インフラ...
    SIP／重要インフラ等におけるサイバーセキュリティの確保 シンポジウム2017，2017/10/13 展示出展
    2017 - 2017
  • システムコントロール...
    システムコントロールフェア2017，2017/11/29-12/01 アカデミック出展
    2017 - 2017
  • システムコントロール...
    システムコントロールフェア2015，2015/12/02-04 展示出展
    2015 - 2015