Design of robust control systems against cyber attacks

• Project/Area Number: 17K14699
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Control engineering/System engineering
• Research Institution: Kobe University
• Principal Investigator: Masashi Wakaiki 神戸大学, システム情報学研究科, 講師 (50778587)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 制御システム / セキュリティ / プライバシー / 量子化制御 / 分散最適化 / 送信電力制御 / DoS攻撃 / オブザーバ

Outline of Final Research Achievements

We have considered networked control systems under cyber attacks and have proposed design methods of controllers that guarantee the safety of the systems. As cyber attacks, we have handled data manipulation in measurement signals as well as DoS attacks (malicious packet losses). The plant model we have considered are continuous systems described by differential equations or difference equations and also discrete systems described by automata. In addition, we have developed a privacy enhancement method for the transmission power control of wireless base stations.

Academic Significance and Societal Importance of the Research Achievements

IoT（Internet of Things）が急速に発展する現在，重要インフラなど都市に存在するあらゆるものがインターネットで繋がり，サイバー攻撃を受ける範囲が今後広がることが予想される．政府・企業の社会的信頼の失墜を未然に防ぎ，その生産性を担保しながら事業を継続するために，制御システムにおけるサイバー攻撃対策は極めて重要な課題といえる．本研究はこの課題を解決するための研究開発であり，これまで制御性能の改善を主目的としてきた制御理論にも学術的に大きなインパクトを持つものである．

Research Products

• [Int'l Joint Research] University of California, Santa Barbara/University of California, Los Angeles(米国)
• [Int'l Joint Research] University of California, Santa Barbara(米国)
• [Int'l Joint Research] University of California, Santa Barbara/University of California, Berkeley/University of California, Los Angeles(米国)
• [Int'l Joint Research] Lund University(スウェーデン)
• [Journal Article] Event-triggered control of infinite-dimensional systems (2020)
  • Author(s): Wakaiki Masashi、Sano Hideki
  • Journal Title: SIAM Journal on Control and Optimization Volume: 58 Issue: 2 Pages: 605-635
  • DOI: 10.1137/18m1179717
  • Peer Reviewed
• [Journal Article] Sampled-data output regulation of unstable well-posed infinite-dimensional systems with constant reference and disturbance signals (2020)
  • Author(s): Wakaiki Masashi、Sano Hideki
  • Journal Title: Mathematics of Control, Signals, and Systems Volume: 32 Pages: 43-100
  • Peer Reviewed
• [Journal Article] An LMI approach to stability analysis of coupled parabolic systems (2020)
  • Author(s): Wakaiki Masashi
  • Journal Title: IEEE Transactions on Automatic Control Volume: 65 Issue: 1 Pages: 404-411
  • DOI: 10.1109/tac.2019.2916534
  • Peer Reviewed
• [Journal Article] Stabilization of Networked Control Systems under DoS Attacks and Output Quantization (2020)
  • Author(s): Wakaiki Masashi、Cetinkaya Ahmet、Ishii Hideaki
  • Journal Title: IEEE Transactions on Automatic Control Volume: - Issue: 8 Pages: 3560-3575
  • DOI: 10.1109/tac.2019.2949096
  • Peer Reviewed
• [Journal Article] Stability analysis of perturbed infinite-dimensional sampled-data systems (2020)
  • Author(s): Wakaiki Masashi、Yamamoto Yutaka
  • Journal Title: Systems & Control Letters Volume: 138 Pages: 104652-104652
  • DOI: 10.1016/j.sysconle.2020.104652
  • Peer Reviewed
• [Journal Article] Optimal current control for PMSM considering inverter output voltage limit: model predictive control and pulse-width modulation (2019)
  • Author(s): Koiwa Kenta、Kuribayashi Toru、Zanma Tadanao、Liu Kang-Zhi、Wakaiki Masashi
  • Journal Title: IET Electric Power Applications Volume: 13 Issue: 12 Pages: 2044-2051
  • DOI: 10.1049/iet-epa.2019.0225
  • Peer Reviewed
• [Journal Article] Supervisory control of discrete-event systems under attacks (2019)
  • Author(s): Wakaiki Masashi、Paulo Tabuada、Joao P. Hespanha
  • Journal Title: Dynamic Games and Applications Volume: 9 Pages: 965-983
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Observer-based stabilization of systems with quantized inputs and outputs (2019)
  • Author(s): Wakaiki Masashi、Zanma Tadanao、Liu Kang-Zhi
  • Journal Title: IEEE Transactions on Automatic Control Volume: 64 Issue: 7 Pages: 2929-2936
  • DOI: 10.1109/tac.2018.2873355
  • Peer Reviewed
• [Journal Article] A control-theoretic approach for cell zooming of energy harvesting small cell networks (2019)
  • Author(s): Wakaiki Masashi、Suto Katsuya、Koiwa Kenta、Liu Kang-Zhi、Zanma Tadanao
  • Journal Title: IEEE Transactions on Green Communications and Networking Volume: 3 Issue: 2 Pages: 329-342
  • DOI: 10.1109/tgcn.2018.2889897
  • Peer Reviewed
• [Journal Article] LQ-Optimal Sampled-Data Control under Stochastic Delays: Gridding Approach for Stabilizability and Detectability (2018)
  • Author(s): Wakaiki Masashi、Ogura Masaki、Hespanha Joao P.
  • Journal Title: SIAM Journal on Control and Optimization Volume: 56 Issue: 4 Pages: 2634-2661
  • DOI: 10.1137/17m1150608
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Stability Analysis and l2-gain of Adaptive Control Systems with Event-triggered Try-once-discard Protocols (2018)
  • Author(s): M. Wakaiki
  • Journal Title: IEEE Control Systems Letters Volume: 2 Issue: 1 Pages: 157-162
  • DOI: 10.1109/lcsys.2017.2777739
  • Peer Reviewed
• [Journal Article] SMT-based observer design for cyber-physical systems under sensor attacks (2018)
  • Author(s): Y. Shourkry, M. S. Chong, M. Wakaiki, P. Nuzzo, A. Sangiovanni-Vincentelli, S. A. Seshia, J. P. Hespanha, and P. Tabuada
  • Journal Title: ACM Transactions on Cyber-Physical Systems Volume: 2 Issue: 1 Pages: 1-27
  • DOI: 10.1145/3078621
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Stabilization of networked control systems under clock offsets and quantization (2017)
  • Author(s): Okano Kunihisa、Wakaiki Masashi、Yang Guosong、Hespanha Joao P.
  • Journal Title: IEEE Transactions on Automatic Control Volume: 印刷中 Issue: 6 Pages: 1708-1723
  • DOI: 10.1109/tac.2017.2753938
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Stabilization of switched systems with sampled and quantized output feedback (2017)
  • Author(s): M. Wakaiki and Y. Yamamoto
  • Journal Title: IET Control Theory and Applications Volume: 11 Issue: 12 Pages: 1913-1921
  • DOI: 10.1049/iet-cta.2016.1299
  • Peer Reviewed
• [Journal Article] Stabilization of systems with asynchronous sensors and controllers (2017)
  • Author(s): M. Wakaiki, K. Okano, and J. P. Hespanha
  • Journal Title: Automatica Volume: 81 Pages: 314-321
  • DOI: 10.1016/j.automatica.2017.04.005
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Stabilization of switched linear systems with quantized output and switching delays (2017)
  • Author(s): M. Wakaiki and Y. Yamamoto
  • Journal Title: IEEE Transactions on Automatic Control Volume: 62 Issue: 6 Pages: 2958-2964
  • DOI: 10.1109/tac.2016.2604924
  • Peer Reviewed
• [Journal Article] Delayed bet-hedging resilience strategies under environmental fluctuations (2017)
  • Author(s): M. Ogura, M. Wakaiki, H. Rubin, and V. M. Preciado
  • Journal Title: Physical Review E Volume: 95 Issue: 5 Pages: 052404-052404
  • DOI: 10.1103/physreve.95.052404
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] <i>H</i>_∞ Control Approach to Reduction of Energy Capacity of Energy Storage Systems (2017)
  • Author(s): 小岩 健太, 鈴木 賢太, 劉 康志, 残間 忠直, 若生 将史, 田村 淳二
  • Journal Title: IEEJ Transactions on Power and Energy Volume: 137 Issue: 8 Pages: 596-597
  • DOI: 10.1541/ieejpes.137.596
  • NAID: 130005876218
  • ISSN: 0385-4213, 1348-8147
  • Peer Reviewed
• [Presentation] Privacy-preserved cell zooming with distributed optimization in green networks (2019)
  • Author(s): Masashi Wakaiki、Suto Katsuya、Izumi Masubuchi
  • Organizer: 90th IEEE Vehicular Technology Conference
  • Int'l Joint Research
• [Presentation] 無限次元系のイベント駆動制御について (2019)
  • Author(s): 若生将史，佐野英樹
  • Organizer: 2019年度応用数学合同研究集会
• [Presentation] Backstepping Observers for Two Linearized Kermack-McKendrick Models (2018)
  • Author(s): Sano Hideki、Wakaiki Masashi、Maruyama Hayate
  • Organizer: 17th IFAC Workshop on Control Applications of Optimization
  • Int'l Joint Research
• [Presentation] Simultaneous Optimization of Statistical Model and Control Input Plan (2018)
  • Author(s): Iimura Yoshinobu、Wakaiki Masashi、Homma Katsumi、Umeda Yuhei、Kaneko Junji、Higuchi Hiroyuki、Kubota Kazumi、Asami Naoya、Ikeda Kazuto
  • Organizer: 2018 Annual American Control Conference
  • Int'l Joint Research
• [Presentation] Quantized Output Feedback Stabilization under DoS Attacks (2018)
  • Author(s): Wakaiki Masashi、Cetinkaya Ahmet、Ishii Hideaki
  • Organizer: 2018 Annual American Control Conference
  • Int'l Joint Research
• [Presentation] Model Predictive Cell Zooming for Energy-Harvesting Small Cell Networks (2018)
  • Author(s): Wakaiki Masashi、Suto Katsuya、Koiwa Kenta、Liu Kang-Zhi、Zanma Tadanao
  • Organizer: 2018 IEEE International Conference on Communications
  • Int'l Joint Research
• [Presentation] DoS攻撃の下での量子化制御 (2018)
  • Author(s): 若生将史，Ahmet Cetinkaya, 石井秀明
  • Organizer: 第61回システム制御情報学会研究発表講演会
• [Presentation] 無限次元システムのサンプル値サーボ問題について (2018)
  • Author(s): 若生将史，佐野英樹
  • Organizer: 2018年度応用数学合同研究集会
• [Presentation] Design of networked control systems in consideration of quantization error and channel capacity (2017)
  • Author(s): G.-B. Li, T. Zanma, M. Wakaiki, and K.-Z. Liu
  • Organizer: 36th Chinese Control Conference
  • Int'l Joint Research
• [Presentation] Electrical angle estimation of rotor for PMSM in model predictive current control (2017)
  • Author(s): Y. Takagi, K. Koiwa, T. Zanma, M. Wakaiki, and K.-Z. Liu
  • Organizer: 36th Chinese Control Conference
  • Int'l Joint Research
• [Presentation] Stability and performance analysis of receding horizon quantizer in single-input system (2017)
  • Author(s): S. Takayasu, T. Zanma, M. Wakaiki, and K.-Z. Liu
  • Organizer: 36th Chinese Control Conference
  • Int'l Joint Research
• [Presentation] Estimation of network traffic status for networked control systems with data dropout and its control (2017)
  • Author(s): D. Hashimoto, T. Zanma, M. Wakaiki, and K.-Z. Liu
  • Organizer: 36th Chinese Control Conference
  • Int'l Joint Research
• [Presentation] Quantized output feedback stabilization by Luenberger observers (2017)
  • Author(s): M. Wakaiki, T. Zanma, and K.-Z. Liu
  • Organizer: 20th IFAC World Congress
  • Int'l Joint Research
• [Presentation] Linear quadratic control for sampled-data systems with stochastic delays (2017)
  • Author(s): M. Wakaiki, M. Ogura, and J. P. Hespanha
  • Organizer: 2017 American Control Conference
  • Int'l Joint Research