说明：  Simulink下的电流闭环控制系统仿真，可根据需要修改Transfer Fcn1中的参数，找到一个在超调量和动态响应快慢上都比较满意的电流环调节器。
(Simulink, the current closed-loop control system simulation, according to the need to modify the parameters Transfer Fcn1 find an overshoot on the dynamic response speed are more satisfied with the current loop regulator.)