The starting procedure of a brushlees DC motor without position sensor controlled by microcomputer is studied. A testing method which permits determination of the permanent magnet rotor position by the back electromotive force (EMF) is proposed .

• 对单片机控制的无位置传感器无刷直流电机的起动过程进行了研究，提出了一种实用的通过反电势确定转子位置的方法。