Observer-based resilient dynamic event-triggering control for switched systems under DoS and FDI attacks

This article investigates the problem of the observer-based dynamic event-triggering control for networked switched systems under denial-of-service (DoS) attacks and false data injection (FDI) attacks. The considered DoS attack model is limited by duration and frequency, and the FDI attack signal is generated by an exogenous system. First, an extended observer is constructed to estimate both the system state and the FDI attack signal. Subsequently, an observer-based resilient dynamic event-triggered mechanism is designed to reduce communication resource costs and eliminate the limitation of maximum asynchronous times less than dwell time such that the system can frequently switch in the event interval. Furthermore, by employing Lyapunov stability theory and average dwell time method to guarantee the switched system is exponentially stable. Meanwhile, a co-design scheme of controller gains, observer gains, and triggering parameters is developed. Finally, a switched circuit system is used to substantiate the feasibility of the proposed approach.