...反电势系数 [gap=510]hless DC motor；Characteristics；Parameters；Equivalent circuit；Torque coefficient；Back-EMF coefficient ...
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A more accurate estimate expression is obtained by testing the curve of DC motor internal resistance and back-EMF coefficient which changes with the motor current.
通过测试直流电机内阻和反电动势系数随电机电流的变化曲线，从而得到电机转速更精确的估计表达式。
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