基于STM32的单相电机调速控制器的设计

Design of single-phase motor speed controller based on STM32

针对模拟调速方法控制精度和柔性差的缺点,提出了一种数字化的单相电机调速方案。介绍了单相交流调压调速原理,设计了控制器主电路和过零检测电路,对电路进行了仿真和参数优化,在此基础上搭建了基于STM32的单相电机调压调速控制系统并进行实验验证。仿真与实验结果表明,过零信号检测判断准确,实验波形与理论分析一致,实现了数字化调压调速。

Aiming poor precision and flexibility of the analog speed control method,a digital speed control scheme for the single-phase motor is proposed.Firstly,the principle of single-phase AC variable voltage speed control is introduced,the main circuit of the controller and the zero-crossing detection circuit are designed,and then the circuit simulation and parameter optimization are carried out.On that basis,an STM32-based variable voltage speed controller for the single-phase motor is built.The zero-crossing detection of supply voltage is accurate.The simulated and experimental results are shown to be in good agreement,verifying the reliability of the digital speed control method.