Measurement of torque ripples for small torque motors

被引：0

作者：

Wang X.-J. ^{[1
,2
]}

Wang X.-Q. ^{[1
,2
]}

机构：

[1] State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin

[2] MOEMS Education Ministry Key Laboratory, Tianjin University, Tianjin

来源：

Wang, Xiao-Qing (tjuwxq@tju.edu.cn) | 1600年 / Chinese Academy of Sciences卷 / 24期

关键词：

Brushless direct current motor; Torque measurement; Torque motor; Torque ripple;

D O I：

10.3788/OPE.20162406.1359

中图分类号：

学科分类号：

摘要：

According to the shortcomings in classical dynamic and static measurement for the torque ripple of a torque motor, a method to measure precisely the torque ripple was presented. The error sources of the classical torque ripple measurement methods were analyzed. Then a new method to measure the torque ripple based on the relative rotation of the stator to a rotor was proposed according to the unique characteristics of the torque motor with a separate structure and the ability to endure long time block. Under the condition of rotor block of the torque motor, the stator was rotated by the external force and the torque ripple of the motor was measured. Using this method, the errors of the inertia moment and the friction torque were effectively reduced. A set of measuring device was built based on the proposed method, and the relative rotation of the stator and rotor was realized with a worm gear mechanism. A verifying experiment was performed and the experimental results show that the measurement accuracy of the device with a range of 0-1 Nm is 0.3% and the linearity is 0.1%, which meets the requirements of torque motors for high precision toque ripple measurement. © 2016, Science Press. All right reserved.

引用

页码：1359 / 1364

页数：5

共 10 条

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