无位置传感器无刷直流电机的控制策略

The control of position-sensorless brushless DC motor

研究了无位置传感器无刷直流电机的控制方法，深入分析了反电势法的原理以及起动等技术要点，在完成实验系统后进行控制实验，并对实验数据和波形进行分析。结果表明，通过调节电机的外施电压可方便平稳地调节电机转速，并且整个控制系统工作正常。

The control of brushless DC motor, the principle and keypoints of back EMF method are investigated in this paper. The practical system is finished and experiments are conducted, the results and waveform are analyzed in detail.