基于STM32的直流电机调速新方法

A New Method of DC Motor Speed Regulation based on STM32

为满足不同的需求,经常使用PWM波调整直流电机的转速。但在实际应用中,即使是一个固定的PWM值,直流电机的转速也未必恒定。为了解决这个问题,通常用PID算法控制电机的转速,使其达到一个稳定值。但PID算法比较复杂,要进行建模、参数整定等。提出一种简单、可行的方法,在很短的定时时间内,测试电机的转速,将其与设定转速值进行比较,得到误差。根据误差值的正负,调整PWM波中的正脉宽的宽度,以达到对电机转速的快速、实时调整。经过实测:采用STM32微处理器,能够快速调整电机转速,并使其很快达到一个稳定值。

In order to meet different requirements,the PWM wave is often used to adjust the speed of DC motor.However,in practical applications,even a constant PWM value,DC motor speed may not be stable value.In order to solve this problem,the PID algorithm is often used to control the motor speed to achieve a stable value.However,the PID algorithm is more complex,to modeling,parameter tuning,etc..A simple and feasible method is proposed to test the motor speed in a short time.According to the positive and negative values of the error,the width of the positive pulse width is adjusted to achieve the fast and real-time adjustment of the motor speed.After the measurement:using STM32 microprocessor,can quickly adjust the motor speed,and it will soon reach a stable value.