基于反电势滤波方法的无传感器BLDCM控制  

Sensorless BLDCM Control Based on Back-EMF Filtering

作　　者：张淑艳[1] 王行愚[1] 姚晓东[1] 

机构地区：[1]华东理工大学信息科学与工程学院,上海200237

出　　处：《微电机》2010年第5期66-69,共4页Micromotors

摘　　要：目前应用于无传感器BLDCM的控制方法都是采用位置检测电路来间接获得转子位置信息,实现对BLDCM的控制。该文提出一种可以省掉位置检测电路的基于反电势滤波的方法,可以准确获得反电势过零点,驱动BLDCM平稳运行。基于TMS320LF2407A的控制平台进行实验,结果证明了该方法的有效性。In order to detect the rotor position of the sensorless brushless DC motor （ BLDCM）, circuit of rotor position detection was used generally. This paper propound a BLDCM control algorithm, it could preclude the need for circuit of rotor position detection, implemented using the digital signal processor （DSP） TMS320LF2407A. The algorithm works by digitally filtering the back-electromotive force （ backEMF） on each phase of the motor and can identify the zero-cross event accurately and determining when to commutate the motor windings based on the filtered back-EMF signals. The experimental result demonstrates the proposed control method provides desirable performance.

关 键 词：反电动势滤波 无刷直流电机 无传感器控制 数字信号处理器(DSP) 

分 类 号：TM361[电气工程—电机]