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 introduces a new method for measuring the compression pressures of tank engine in the way of measuring instantaneous speed of crankshaft without disassembly.
现提出一种利用曲轴瞬时转速，进行不解体检测坦克发动机汽缸压缩压力的方法。
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