Stability Of Two Classes Of Switched Systems Under Cyber Attacks

This thesis mainly studies the stability of two classes of switched systems under cyber attacks.Due to the diversity of cyber attacks,a novel model of multiple attacks including stochastic deception attacks and periodic denial-of-service(DoS)attacks is proposed in the thesis.The event-triggered_∞control is investigated for switched systems with average dwell-time(ADT)and the multiple attacks.In order to ensure system performance and reduce network communication burden,event-triggered param-eters can be adjusted according to mode information of switched systems in the adopted event-triggered strategy.Besides,periodic characteristics of Do S attacks are used in the design of event-triggered conditions.In virtue of the multiple Lyapunov functions method,sufficient conditions are provided to ensure mean-square exponential stability and_∞performance of the ADT switched systems.Furthermore,event-triggered pa-rameters are derived.Subsequently,for the more general models of switching signals and deception attacks,the_∞control is studied for switched systems with persistent dwell-time(PDT)and stochastic deception attacks.During the analysis of system stability,the-portion and-portion are discussed respectively based on the multiple Lyapunov functions method.Then sufficient conditions guaranteeing system performance are ob-tained and the design of controllers is put forward.eventually,numerical examples are given to verify the effectiveness and feasibility of the presented approaches.