电子科技2019，Vol.32Issue(3)：67-71,5.DOI:10.16180/j.cnki.issn1007-7820.2019.03.014
一种新的BLDCM无传感器梯形控制方法
A New Trapezoidal Control Method of Sensorless BLDCM
摘要
Abstract
Sensorless brushless DC motor is mainly controlled by the back-EMF method. However, a variety of disturbances in the control method will cause glitches and ripples in the waveform of Back-EMF, leading to erroneous judgment of the zero-crossing point of Back-EMF. In this paper, a sensorless BLDCM control method was proposed, and the proposed optimal function was used to filter the results of the Back-EMF detection. By analyzing the back EMF waveform, the optimal function was used to filter the glitches and ripples near zero-crossing point of the Back-EMF to avoid the misjudgement of the zero crossing point of the back EMF. Finally, the commutation time of the motor drive voltage was obtained, and the level of precise control of motor was improved. Experimental results proveed the correctness and feasibility of the new BLDCM sensorless trapezoidal control method.关键词
直流无刷电机/无传感器/反电动势/过零检测/毛刺脉冲/优选函数滤波Key words
BLDCM/sensorles/Back-EMF/zero crossing detection/glitch pulse/optimal function filtering分类
信息技术与安全科学引用本文复制引用
王行芳,金施群,邢金玉,侯少阳,王喆..一种新的BLDCM无传感器梯形控制方法[J].电子科技,2019,32(3):67-71,5.基金项目
国家科技部重大科研仪器设备专项(2013YQ220749) （2013YQ220749）
国家自然科学基金(51475133) （51475133）
