认为以满足螺旋桨额定推力为目的，推进电动机只需要低速输出额定转矩来实现，即输出功率较低。

In order to satisfy the operation requirement of the rated thrust of the propeller, the propulsion motor performs only in rated torque on the low speed, so the motor power is low.

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介绍一种新型的螺旋桨特性负载模拟装置，它是全数字控制的直流转矩伺服系统，采用转矩电流双闭环控制方式。

A new equipment for simulated the performance of propeller load is introduced in this paper, it's an all digital DC torque servo system using torque closed loop and current closed loop control.

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该论文先介绍了螺旋桨驱动电机的工作原理，分析了无刷直流电机转矩脉动产生的原因及消除或抑制方法。

The work principle of the motor driving airscrew is presented in the dissertation. The reasons and the method of elimination or suppression of torque pulses produced by BLDCM are analyzed.

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