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标题：无刷直流电机反电动势过零点延迟角度的计算方法 |
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作者：郎宝华，李本斌，张宏鹏 |
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| 2015年第7期 访问次数：263次 |
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摘要：本文通过分析反电动势过零点硬件检测电路，研究了该电路使反电动势过零点信号延迟角度大小的计算问题。得出已有延迟角度计算公式不符合该电路，重新推导了延迟角度计算公式，并通过Multisim软件搭建仿真电路进行验证，仿真结果表明重新推导出的公式是正确的，而已有公式确实不符合该硬件电路。
关键词：反电动势；过零点信号；延迟角度；无刷直流电机
Abstract: The article studied the problem of the circuits make back electromotive force(EMF) zerocrossing delay and its size calculating by analyzing back EMF zerocrossing hardware detecting circuits. Obtaining that the exsiting calculating formula for detecting the size of delay angle inconformity with the hardware circuits, the author deduced a new formula for calculating zerocrossing delay angle, and built simulating circuits to detect the results by Multisim. The verification results show the right of the new deducing formula and the exsiting formula is indeed not match with this hardware circuits.
Key words: back electromotive force；zerocrossing points signals；delay angle；brushless DC motors
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