万能打印机控制平台程序，实现电机上下进出控制以及液晶显示-Universal printer control platform program, the motor up and down out of control, and LCD

This circuit uses the AC7 block of SimPowerSystems™ library. It models a brushless DC motor drive with a braking chopper for a 3HP motor.The permanent magnet synchronous motor (with trapezoidal back-EMF) is fed by a PWM voltage source inverter,

对音圈电机进行PID控制，具有通用性，包含窗口界面(The PID control of the voice coil motor is universal, including window interface)