Finite‐time fault‐tolerant control for switched systems with fault in polynomial form based on dynamic event‐triggered mechanism

Abstract This paper investigates the finite‐time fault‐tolerant control problem for switched system with polynomial faults under a dynamic event‐triggered scheme. Firstly, an observer is designed based on the given event‐triggered scheme to estimate the system state and faults. Secondly, based on the estimated information of the observer, a fault‐tolerant controller that can compensate for the effects of faults is designed. Then, the conditions for the finite‐time boundedness of the closed‐loop error system are obtained by constructing a Lyapunov function. Finally, the feasibility of the proposed method is verified by numerical simulation and boost converter circuit simulation examples.