Design and analysis of vibration isolation for reaction wheel by using electromagnetic shunt damping

被引：0
|
作者：
Zhang H. [1 ]
Luo Q. [1 ]
机构：
[1] College of Aerospace Science and Engineering, National University of Defense Technology, Changsha
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2024年 / 37卷 / 02期
关键词：
electromagnetic shunt damping; micro-vibration; reaction wheel; vibration isolation;
D O I：
10.16385/j.cnki.issn.1004-4523.2024.02.007
中图分类号：
学科分类号：
摘要：
Reaction wheels are not only important attitude control actuators for satellites，but also the most prominent onboard micro-vibration source. Considering the varying rotating speed of reaction wheels，this paper proposes a new vibration isolation method using a six-strut isolator combined with the electromagnetic shunt damping（EMSD）technique. A dynamic model of the coupled system consists of a reaction wheel and the isolator is derived including the gyroscopic effect produced by the rotating wheel. The results obtained through analytical analysis and simulations show that gyroscopic effects have a great effect on the natural modes，frequencies，and isolation performance. And then，the influences of key parameters on the isolation performance are analyzed and optimized. Finally，an isolation strut based on the EMSD technique is manufactured and tested. The experiment results verified the influences of the stiffness and EMSD on the transmissibility of the strut. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：247 / 257
页数：10
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