كنترل سرعت موتور القايي با استفاده از ساختارهاي متغير مبتني بر مدلغزشي فازي بر مبناي خطي سازي بافيدبك

Speed Control of Induction Motors Using Variable Structure Technique Based on Fuzzy Sliding Mode and Feedback Based Linearization

The speed control of induction motor using a fuzzy sliding mode based variable structure technique is proposed. This technique provides a robust performance of the motor against the variation of the motor parameters as well as uncertainties and disturbances. Modified fuzzy rules are used to eliminate the oscillation around the sliding line without significant reduction of the robustness of the system. Rotor flux is estimated by using an observer in rotor reference frame and then the feedback linearization theory is used in order to decouple the rotor speed and flux. The simulation results showed satisfactory results for the proposed control technique where the load and reference speed are changed.