This paper is concerned with the security control problem of the networked control system (NCSs) subjected to denial of service (DoS) attacks. In order to guarantee the security performance, this paper treats the influence of packet dropouts due to DoS attacks as a uncertainty of triggering condition. Firstly, a novel resilient triggering strategy by considering the uncertainty of triggering condition caused by DoS attacks is proposed. Secondly, the event-based security controller under the resilient triggering strategy is designed while the DoS-based security performance is preserved. At last, the simulation results show that the proposed resilient triggering strategy is resilient to DoS attacks while guaranteing the security performance.
This paper focuses on resilient control of networked control systems (NCSs) under the denial of service (DoS) attacks which is characterized by a Markov process. Firstly, the packets dropout are modeled as Markov process according to the game between attack strategies and defense strategies. Then, an NCS under such game results is modeled as a Markovian jump linear system and four theorems are proved for the system stability analysis and controller design.Finally, a numerical example is used to illustrative the application of these theorems.
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