Robust adaptive fault tolerant controller design, applied to three phase induction motor

Abstract

This paper investigates a robust adaptive state feedback control scheme to solve the robust fault-tolerant control (FTC) problem for a three phase induction motor (TPIM) with loss of actuator effectiveness and external disturbances. Using Lyapunov stability theory, a constructive algorithm based on linear matrix inequalities (LMIs) is developed for on-line tuning of adaptive and fixed state-feedback gains to stabilize the closed-loop system and compensate actuator faults with disturbance attenuation. Simulation results reveal the merits of proposed robust adaptive FTC scheme on an induction motor subjected to actuator faults.