Adaptive Sliding Mode Fault-Tolerant Control of Redundant Electro-Mechanical Actuator System

An adaptive sliding mode fault-tolerant control (ASMC) based on the backstepping method is proposed for sensor and actuator failures that may occur in the redundant electro-mechanical actuation system on the flight control system. Firstly, an extended state observer (ESO) is used to estimate the value of the position; secondly, the adaptive law set for the actuator fault is combined with the sliding mode control to realize the fault-tolerant control. Finally, the Lyapunov function is utilized to demonstrate the stability of the controller. The simulation results verify that the scheme can ensure that the system can achieve stable tracking under faults.