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Output-based Security Control of NCSs Under Resilient Event-triggered Mechanism and DoS Attacks

Lisai Gao, Jingqi Fu, and Fuqiang Li*
International Journal of Control, Automation, and Systems, vol. 19, no. 4, pp.1519-1527, 2021

Abstract : This paper studies the output-based security control of networked control systems under resilient event-triggered mechanism (RETM) and periodic denial-of-service (DoS) attacks. Firstly, using attack period and sleeping interval of jammer, an output-based resilient event-triggered mechanism is introduced, which can save system resources despite DoS attacks. Secondly, a switched system model is built, which integrates impacts of the RETM and DoS attacks in a unified framework. Thirdly, using piecewise Lyapunov functional approach, exponential stability criteria are obtained, which establish quantitative relationships among the RETM, DoS attacks, sampling period and exponential decay rate. Further, sufficient conditions for co-designing the RETM and output-based security controller are presented. Finally, example confirms effectiveness of the propose method.

Keyword : Denial-of-service attacks, dynamic output feedback controller, event-triggered control, networked control systems, piecewise Lyapunov functional.

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