Adaptive fuzzy fault-tolerant control for a class of nonlinear systems with actuator failures

In this paper, an adaptive fuzzy fault-tolerant control algorithm is proposed for a class of nonlinear systems with actuator failures. Based on the same structure of virtual control inputs and the monotonously increasing property of the bounding functions, a variable separation approach is proposed. By applying backstepping technique, an adaptive fuzzy control approach is presented which can guarantee the semi-global boundedness of all signals within the closed-loop system. The tracking error using the proposed control scheme eventually converges to a small neighborhood of the origin.