Mechanism of abnormal fluctuation of friction torque of control moment gyro bearing assembly

被引：0
作者：
Deng K. [1 ]
Xie P. [2 ]
Liao H. [3 ]
Zhou G. [4 ]
Deng S. [1 ]
机构：
[1] School of Mechatronics Engineering, Henan University of Science and Technology, Henan, Luoyang
[2] Momentum Wheel Technology Department, Luoyang Bearing Research Institute Company Limited, China National Machinery Industry Corporation, Henan, Luoyang
[3] School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an
[4] Beijing Institute of Control Engineering, China Academy of Space Technology, China Aerospace Science and Technology Corporation, Beijing
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2023年 / 38卷 / 03期
关键词：
bearing assembly; cage; control moment gyroscope; friction torque; rub-impact;
D O I：
10.13224/j.cnki.jasp.20210424
中图分类号：
学科分类号：
摘要：
Based on dynamics analysis of angular contact ball bearing, the nonlinear differential dynamic equations and the theoretical formula of friction torque for the bearing assembly of control moment gyro with revolution-rotation coupling were established. The influences of cage structure, raceway processing accuracy and preload on friction torque characteristics of the bearing assembly of control moment gyro were studied. The mechanism of abnormal fluctuation in friction torque of a certain bearing assembly of control moment gyro was also analyzed. The analysis results showed that the rub-impact between the outer diameter surface of cage and the guide rib of ring, and that between ball and cage pocket were main factors that triggered the abnormal fluctuation in friction torque of the bearing assembly of control moment gyro. A reasonable original radial clearance of bearing can effectively eliminate the rubbing phenomenon between the outer diameter surface of bearing cage and the guide edge of the ring, and avoid obvious abnormal fluctuation in friction torque of the bearing assembly of control moment gyro. © 2023 BUAA Press. All rights reserved.
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页码：752 / 768
页数：16
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