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基于端电压对称的无位置传感器无刷直流电机位置信号相位校正

, PP. 54-59

Keywords: 无刷直流电机,无位置传感器,端电压偏差,闭环控制

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Abstract:

详细分析了H_PWM-L_PWM调制方式下端电压偏差与位置信号相位误差的关系,得到端电压偏差能够准确反应位置信号相位误差的结论,并在此基础上提出了一种新型的闭环控制方法。该控制方法以端电压偏差为反馈量,通过PI调节器实时调整过零点延时角度,从而达到校正位置信号相位的目的。实验验证了该方法能够实时、有效地校正位置信号相位,改善电机运行性能。

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