无刷直流电机反电动势过零检测研究  

Study of Brushless DC Motor Based on Back-EMF Method

作　　者：高文华[1] 

机构地区：[1]陕西工业职业技术学院,陕西咸阳712000

出　　处：《机械与电子》2008年第6期32-35,共4页Machinery & Electronics

摘　　要：分析了反电势过零检测法控制无位置传感器直流无刷电机的基本原理,设计了反电动势过零检测电路,详细论述了电路中滤波所带来移相及其补偿问题,提出了软件实现的方法,并进行了实验验证。This paper presents the basic principle of sensorless brushless DC motor commutated by using the zero - crossing method of back EMF, and designs the detection circuit, the phase shifting which the filter brings to the electric circuit and phase compensation problem are discussed in detail. Proposes a software method and carries on the confirmation through the experiment.

关 键 词：无刷直流电机 反电势法 相位补偿 低 通滤波器 

分 类 号：TM345[电气工程—电机]