Takagi-Sugeno fuzzy observer based fault tolerant tracking control for induction motor drive

This paper presents an active fault tolerant control (FTC) strategy for induction motor drive that ensures trajectory tracking and offsets the effect of the sensor faults. The proposed approach considers a time varying fault that takes into account a large class of sensor fault. The physical model of induction motor is approximated by the Takagi-Sugeno (T-S) fuzzy technique in the synchronous d-q frame rotating with field-oriented control strategy. The performances of the trajectory tracking are analyzed using the Lyapunov theory and L₂ optimization. Finally the effectiveness of the proposed strategy is illustrated in simulation results.