Fuzzy Sliding Mode Based on Indirect Field Orientation for Induction Motor Drive

In this paper, the design of a speed control scheme based on fuzzy-sliding mode control for indirect field-orientated induction motor (IM) is proposed. In the speed controller, a fuzzy logic controller replaces the discontinuous part of the classical sliding mode control law. The decoupling scheme also uses two fuzzy sliding mode controllers to regulate the d-axis and q-axis stator currents respectively. This new current controller exhibits several advantages such as fast dynamic response, high quality decoupling, rejection of disturbance uncertainties and robustness to parameter variations. The numerical simulation results of the proposed scheme have presented good performances as compared to the classical sliding mode control and to proportional-integral controllers