Fuzzy Adaptive Finite-Time Fault-Tolerant Control for Strict-Feedback Nonlinear Systems

This article devotes to investigating the issue of fuzzy adaptive control for a class of strict-feedback nonlinear systems with nonaffine nonlinear faults. The computational complexity is reduced by adopting the dynamic surface control technique. Under the framework of finite-time stability, a novel fault-tolerant control strategy is designed so that the closed-loop system is semiglobally practically finite-time stable, and the tracking error converges to a small residual set in a finite time. Finally, simulation studies for an electromechanical system are shown to verify the feasibility of the presented approach.

Automated summary

This article investigates a fuzzy adaptive control strategy based on dynamic surface control technique for addressing nonaffine nonlinear faults in a class of strict-feedback nonlinear systems. A novel fault-tolerant control strategy is designed to ensure semi-global practical finite-time stability and convergence of tracking error to a small residual set in a finite time under the framework of finite-time stability. Simulation studies on an electromechanical system are presented to validate the feasibility of the proposed approach.