数字PID的单片机实现程序，用PWM调节电动机的 转速。-Digital PID of the MCU program, adjust the motor speed using PWM.

变频器控制风力发电机，利用PID技术实现快速高效精准的将风力发电机转速控制到设定的范围内，并实现动态调整-The inverter control wind turbines, the use of PID technology to achieve fast and efficient and accurate speed control of wind turbines to the set range, and dynamic adjustment