基于二次定位的反电动势法在无刷直流电机控制系统中的应用  

The Back-EMF Application in the Control System of Brushless DC Motor Based on Second-setting Method

作　　者：王为庆[1] 韩兴国[1] 覃金昌[1] 

机构地区：[1]桂林航天工业学院,桂林541004

出　　处：《现代制造技术与装备》2014年第5期32-34,共3页Modern Manufacturing Technology and Equipment

摘　　要：介绍了一个核心处理器为TMS320LF2812的无位置传感器BLDCM控制系统。该系统采用可靠性较高的反电动势法估算转子的位置信号,并为克服该方法在电机转速较低时难于检测反电势的困难,提出了转子位置的二次定位法。相较其他的BLDCM控制系统,它具有转子位置检测准确度高的优点。This paper introduces a no position sensor BLDC control system with a core processor named TMS320LF2812 . The high reliable back-EMF was used to detect rotor position . But it was difficult to obtain rotor position efficiently when motor speed is slow . Therefore , the second-setting method is presented to overcome the difficulties . Compared to other BLDCM control system , it has the advantages of high accuracy of the rotor position detection .

关 键 词：二次定位 反电动势 无刷直流电机 TMS320LF2812 TMS320LF2812 

分 类 号：TM33[电气工程—电机]