Adaptive Fuzzy Finite-Time Fault-Tolerant Control for Uncertain Non-strict Feedback Nonlinear Systems

In this paper, the finite-time fault-tolerant control design problem is addressed for non-strict feedback nonlinear systems. The considered nonlinear systems contain bias fault and loss of effectiveness in actuator, which can be addressed by fault-tolerant control technique. The fuzzy logic systems (FLSs) are introduced to approximate the unknown nonlinear functions defined on a compact set. Meanwhile, the technique named adding a power integrator is used, which validly overcomes the problem of the system with power-exponentials. A finite-time fault-tolerant controller is constructed base on backstepping design technique and practical finite-time stability theory. Finally, validity is illustrated by the finite-time fault-tolerant control strategy and a simulation.