Adaptive fixed‐time fuzzy control for nonlinear systems with actuator faults

Abstract

SummaryThis article copes with the adaptive fixed‐time funnel control problem for a class of nonlinear systems with actuator faults. To deal with the difficulties due to actuator faults, which include both lock‐in‐place and loss‐of‐effectiveness models, an adaptive fault‐tolerant control scheme is proposed. By introducing the fuzzy logic system and backstepping technique, an adaptive fixed‐time controller is developed to ensure that the tracking error converges into a pre‐specified performance funnel within a fixed time, which is independent on the initial state, and in the meantime, the controlled closed‐loop system remains semi‐global fixed‐time bounded stable and all the signals are bounded. Simulation results verify the proposed approach.