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基于霍尔位置信号的无刷直流电磁转矩观测

, PP. 187-195

Keywords: 无刷直流电机,霍尔位置信号,反电动势,转矩观测

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Abstract:

针对无刷直流电机,在分析反电动势波形函数与霍尔位置信号关系的基础上,提出了一种新颖的电磁转矩观测方法,解决了无连续转子位置信息条件下转矩大小及符号的正负观测问题。与传统方法相比,本文所提方法只需离散的霍尔位置信号,无需连续的转子位置信息及反电动势波形。实验表明,在电机稳态运行、正/反转切换的过渡过程中,该方法都能够有效地计算出转矩的大小与符号的正负,可用于无刷直流电机的直接转矩控制。

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