说明：  无刷直流电动机（BLDCM）PWM闭环控制的MATLAB/SIMULINK仿真，包含电压，电流，转速等波形，比较好用
(Brushless DC motor (BLDCM) PWM closed-loop control of MATLAB/SIMULINK simulation, including voltage, current, speed, etc. waveform, relatively easy to use)