Fuzzy Sliding Mode Variable Structure Control of Asynchronous Motor Based on an Improved Reaching Law

摘要

In order to satisfy the high performance of asynchronous motor control requirements, this paper, in view of the chattering problem of asynchronous motor vector control and traditional sliding mode variable structure control system, proposes a fuzzy reaching law method and devises a fuzzy sliding mode variable structure control strategy and analyzes this control strategy for vector control system of asynchronous motor. The simulation results demonstrate that the control strategy can improve the speed tracking performance of the control system and the control strategy can significantly decrease chattering phenomenon of sliding mode controller and improve the dynamic quality of the system with high robustness. Consequently, the feasibility and validity of this control strategy are verified.