The lifting power of the yoke was not relative to the magnetic field composed in the workpiece tested, so it could not reflect the magnetizing power of the yoke.
该磁化装置的提升力与其在工件中产生的合成磁场无对应关系，因此不能反映对工件的磁化能力。
This paper proposes a new method of sensorless vector control for induction motors, in which the motor speed is estimated by both instantaneous reactive power and variation of magnetizing current.
提出了一种异步电机无速度传感器矢量控制的新方法，用瞬时无功功率和励磁电流变化来估计电机转速。
This paper proposes a new method of sensorless vector control for induction motors, in which the motor speed is estimated by both instantaneous reactive power and variation of magnetizing current.
提出了一种异步电机无速度传感器矢量控制的新方法，用瞬时无功功率和励磁电流变化来估计电机转速。
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