Fuzzy Sliding Mode Variable Structure Control for Brushless DC Motor Position Servo System

Abstract

To solve the problem of the chattering and strict requirement of the accurate parameter of the model in the sliding mode control, a fuzzy sliding mode controller is proposed in this paper. The new model is constructed by means of introducing fuzzy control into sliding mode control. Parameters of PID control method and reaching law are real-time updated by using fuzzy rule inference. The proposed method utilizes full advantages of fuzzy PID control and sliding mode control so that the position tracking performance and robustness of the system are remarkably improved. In addition, chattering of sliding mode control is reduced. Experiments results are presented to validate the correctness and effectiveness of the proposed method