无位置传感器无刷直流电机位置检测与启动控制研究 -- 西北工业大学学报,2017,35(2):208-212
论文:2017,Vol:35,Issue(2):208-212
引用本文:
周勇, 米彦昭, 汪嘉瑶, 韩雁婷, 陈龙, 张超. 无位置传感器无刷直流电机位置检测与启动控制研究[J]. 西北工业大学学报
Zhou Yong, Mi Yanzhao, Wang Jiayao, Han Yanting, Chen Long, Zhang Chao. Research on the Position Detection and Start Control for Sensorless Brushless DC Motor[J]. Northwestern polytechnical university

无位置传感器无刷直流电机位置检测与启动控制研究
周勇, 米彦昭, 汪嘉瑶, 韩雁婷, 陈龙, 张超
西北工业大学 航空学院, 陕西 西安 710072
摘要:
针对无位置传感器无刷直流电机控制问题,提出利用反电动势过零检测法实现电机转子位置检测,并利用三段式启动法完成电机启动。将无刷电机三相绕组的端电压信号转换成数字信号,并推导出三相绕组端电压与未导通相反电动势的关系,通过计算解出反电动势的过零点。电机启动时先通过对指定相通电,确定转子的初始位置,进而由外同步加速状态切换到自同步状态。文章采用Labview软件搭建了电机启动控制系统仿真模型,最后通过仿真和试验验证了所提方案的有效性与可靠性。
关键词:    无位置传感器    无刷直流电机    转子位置    反电动势过零检测    三段式启动    Labview仿真    同步加速    实验设计    数字信号处理   
Research on the Position Detection and Start Control for Sensorless Brushless DC Motor
Zhou Yong, Mi Yanzhao, Wang Jiayao, Han Yanting, Chen Long, Zhang Chao
School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
Abstract:
To solve the problem of precise control for the sensorless Brushless DC Motor (BLDCM), the BEMF-crossing-zero detecting is in used to detect the rotor position, and a three-stage starting strategy is presented to start the motor in this paper. The terminal voltage signal of three-phase winding are converted into digital signal, and the relationship between the terminal voltage in the winding and the BEMF of the phase is derived. Then, the zero-crossing point of BEMF could be resolved. When the motor is beginning to start, a specified phase is break-over to find the initial position of the rotor. Then, the external-synchronous acceleration is switched to the self-synchronous acceleration. The simulation model of sensorless BLDCM is built based on LabVIEW. The results of simulation and the experiments verified the effectiveness and reliability of the strategy.
Key words:    sensorless    brushless DC motors    rotor position    BEMF-crossing-zero detecting    three-stage starting strategy    Labview simulation    synchronous acceleration    design of experiments    digital signal processors   
收稿日期: 2016-09-20     修回日期:
DOI:
基金项目: 中央高校基本科研业务费资助项目(3102016ZY002)资助
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作者简介: 周勇(1978-),西北工业大学副教授,主要从事电气工程及自动化研究。
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