无位置传感器无刷直流电机的新型转子位置检测方法  

New Detection Method for Back Electromotive Force(BEMF)of Brushless Direct-current(BLDC) Motor Without Position Sensor

作　　者：林东轩[1] 王剑[1] 田联房[1] 

机构地区：[1]华南理工大学自动化科学与工程学院,广东广州510640

出　　处：《仪表技术与传感器》2012年第7期77-79,共3页Instrument Technique and Sensor

基　　金：广东省重大专项(2009A080305004)

摘　　要：针对无刷直流电机转子位置检测,提出了一种新颖的反电动势过零点检测方法及其电路实现,与现有反电势法相比,不需要对相电压进行滤波,不会带来相移问题,因此也无需进行补偿[1-3]。实验中,即使速度低至100 r/m,该方法依然有效,而目前普遍采用的反电势法只能在速度大于150 r/m条件下有效,扩展了反电动势法的适用范围。This paper presented a new back-electromotive force（EMF） detection technique which provided wide range control for brushless dc motor（BLDCM） drives and implemented it using electronic circuit,it didn＇t need to filter the phase voltage,and wouldn＇t bring phase shift problem.The effectiveness of the proposed method was demonstrated through hardware results.After experiment,it was proved that this method could work well at the speed down to 100 r/m.This method was used in the sensorless control of BLDCM and was proved to be of great practical value.

关 键 词：直流无刷电机 反电动势法 过零检测 无位置传感器控制 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]