Fault tolerant controller design for a class of affine nonlinear systems based on adaptive virtual actuator

An Adaptive Fault-tolerant Controller procedure for a class of the affine nonlinear system is developed in this paper. This methodology hides both the faults and external disturbances. Compare to the procedure that require separate fault detection, isolation, and identification units, the suggested method concentrates on fault hiding to reduce the units. The main merits of the proposed method are 1) guaranteed stability of the closed loop system, 2) convergence of the states of nominal and faulty systems to zero, and 3) convergence of the tracking error to the origin. The robustness of presented method is assured against external disturbances. Simulation result illustrate the effectiveness of proposed fault tolerant control.