已经制定了测试程序，以测量单相电机在两倍电机线频率下的电机转矩脉动振幅。本文介绍的试验程序不需要使用测功机。电机被固定在一个扭转灵活的框架上。电机轴上安装了一个小型离心风机叶轮，用于向电机施加负载。通过首先测量电机定子在指定电机转速下的扭转加速度振幅和电机定子的质量惯性矩，获得指定电机转速下电机转矩脉动的振幅。然后将这些值代入适当的方程式，以计算电机转矩脉动的相应振幅。对于本文报告的结果，通过改变电机线电压的振幅来改变电机速度。 电机线电压的振幅在额定电机电压的50%到100%之间变化。电机在其额定线路频率（50 Hz或60 Hz）下运行。单位:I-PCITION:研讨会，ASHRAE交易，1998年，第104卷，pt。1A，旧金山

Test procedures have been developed to measure the amplitudes of the motor torque pulsations of a single-phase motor at two times the motor line frequency. The test procedures presented in this paper do not require the use of a dynamometer. The motor was fixed to a torsionally flexible frame. A small centrifugal blower wheel attached to the motor shaft was used to apply a load to the motor. The amplitudes of the motor torque pulsations at specified motor speeds were obtained by first measuring the amplitudes of the torsional accelerations of the motor stator at specified motor speeds and the mass moment of inertia of the motor stator. These values were then substituted into an appropriate equation to calculate the corresponding amplitudes of the motor torque pulsations. For the results reported in this paper, the motor speed was varied by changing the amplitude of the line voltage to the motor. The amplitude of the line voltage to the motor was varied from 50% to 100% of the rated motor voltage. The motor was operated at its rated line frequency (50 Hz or 60 Hz).Units: I-P