Robust Fault Reconstruction With Integral Backstepping Control Design For Im Drives

This paper proposes a new robust fault reconstruction and estimation design for a class of induction motor (IM) drives. In this purpose, a nonlinear controller based new Integral backstepping strategy is adopted to deal with speed and flux tracking problems under un-certainties (parameter variations and external load disturbance). Later, will be combined with a modified sliding mode observer (SMO) based online faults reconstruction, employed for simultaneously state and actuator faults estimations. The closed-loop stability is guarantee, using the Lyapunov stability theory. Simulation results are given to illustrate the proposed approach performances.