Novel integration sliding mode speed controller for vector controlled induction machines

This paper presents and discusses the design and performance comparison of different sliding mode speed controllers for vector controlled induction motors. The design of a sliding mode controller (SMC) with classic sliding surface, a SMC with integration sliding surface and a proposed integration SMC with fuzzy logic control (FLC) are given and compared in the paper for reducing the chattering problem and enhancing the robustness of the system. The simulation results are given to verify the superior performance of the integration SMC with FLC over SMC with classic sliding surface and SMC with integration sliding surface in the aspects of speed response, robustness and torque ripples.