| 无位置传感器BLDCM反电势信号相移补偿研究 |
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| 引用本文： | 史梅花,吕昊暾,张激扬.无位置传感器BLDCM反电势信号相移补偿研究[J].空间控制技术与应用,2011,37(3):41-45. |
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| 作者姓名： | 史梅花 吕昊暾 张激扬 |
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| 作者单位： | 1. 北京控制工程研究所,北京,100190
2. 北京航空航天大学,北京,100191 |
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| 摘 要： | 无位置传感器无刷直流电机（BLDCM）大多采用反电势过零点法检测转子位置,为消除干扰需对反电势过零信号进行滤波,而滤波电路使反电势的过零点产生与速度有关的相移.针对滤波后反电势过零点的相移问题,本文提出电机在低速段和高速段采用不同滤波器的新方法,解决了动态相移对换相过程的影响.最后给出以TMS320LF2407A为控制核心的实验平台,实验结果表明该方法的正确性和有效性.
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| 关 键 词： | 无刷直流电机 无传感器控制 相移 反电势 |
Back-EMF Signal Phase-Shift Compensation for Sensorless BLDC Motor |
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| SHI Meihua,LV Haotun,ZHANG Jiyang.Back-EMF Signal Phase-Shift Compensation for Sensorless BLDC Motor[J].Aerospace Contrd and Application,2011,37(3):41-45. |
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| Authors: | SHI Meihua LV Haotun ZHANG Jiyang |
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| Institution: | SHI Meihua1,LV Haotun2,ZHANG Jiyang1(1.Beijing Institute of Control Engineering,Beijing 100190,China,2.Beijing University of Aeronautics and Astronautics,Beijing 100191,China) |
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| Abstract: | The back electro-motive force(EMF) zero-crossing method is used to usually detect rotor position of the brushless DC motor(BLDCM) without position sensor.The back EMF signal should be low-pass filtered to eliminate the high frequency noise.However,a rotor speed related phase shift at the detected zero-crossing point is generated in the filter.A novel filtering method is proposed in this paper to solve the problem mentioned above,that is,to use two different filtering circuits in low-speed zone and high-spee... |
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| Keywords: | brushless DC motors sensorless control phase-shift back-EMF |
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