According to the relationship of rotational speed, power and DC bus voltage, observing rotational speed by using DC bus voltage is proposed to realize none direct speed measurement.
从发电机转速、功率和直流母线电压之间的相互关系出发，提出利用直流母线电压进行转速观测实现无速度传感器。
Measurement of torque, rotational speed can be displayed, rotor model, and the results calculated viscosity.
测量时可显示扭矩、转速、转子型号，并计算出粘度结果。
Have discussed straining the wave method of the rotational speed measurement.
并讨论了转速测量数据的滤波方法。
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