Resilient event-triggered control of networked switched systems under DoS attacks

Abstract

A resilient event-triggered scheme is proposed to investigate the input-to-state stability (ISS) of networked switched systems subject to denial-of-service (DoS) attacks under fast/slow mode-dependent average dwell time (MDADT). The use of the resilient event-triggered scheme conserves network resources, ensuring that the maximum asynchronous time is smaller than one sampling period, and swiftly detecting the cessation of DoS attacks. For the purpose of analyzing the ISS of the networked switched system, a novel piecewise Lyapunov function is proposed that accounts for the combined impacts of DoS attacks and the resilient event-triggered scheme. The fast MDADT switching is employed to deal with the unstable modes of the closed-loop system. Then sufficient conditions are established to guarantee the ISS of networked switched system facing DoS attacks, which reveal the combined effect of DoS attacks, sampling period and event-triggered constraint on the system stability. Eventually, the efficacy of the aforementioned approach is validated in the simulation through a comparative study.