The Technology Study of Fuzzy Control System for Permanent Magnet Brushless DC Motor

According to the Y-connected three-phase full-controlled bridge between two turn-on circuit, the paper studies the working principle and builds the mathematical model of permanent magnet brushless DC motor(BLDCM). Then the paper introduces fuzzy control technology, and designs the fuzzy control system of permanent magnet BLDCM, at the same time, the paper makes simulation in Matlab/Simulink. Being different from the conventional PID control system, the fuzzy control system of BLDCM can enhance the anti-interference ability of the outside environment, and the fuzzy control system can also reduce significantly torque ripple of BLDCM. Therefore, the fuzzy control technology is introduced in the application of permanent magnet BLDCM, and provides a very idea to the application of BLDCM for the majority of the scientific and technical workers.