Finite-time prescribed performance adaptive fuzzy fault-tolerant control for nonstrict-feedback nonlinear systems

This paper focuses on a finite-time adaptive fuzzy control problem for nonstrict-feedback nonlinear systems with actuator faults and prescribed performance. Compared with existing results, the finite-time prescribed performance adaptive fuzzy output feedback control is under study for the first time. By designing performance function, the transient performance of the corresponding controlled variable is maintained in a prescribed area. Combining the finite-time stability criterion with backstepping technique, a feasible adaptive fault-tolerant control scheme is proposed to guarantee that the system output converges to a small neighborhood of the origin in finite time, and the closed-loop signals are bounded. Finally, simulation results are shown to illustrate the effectiveness of the presented control method.