卫星控制力矩陀螺微振动抑制装置的动力学建模与实验研究

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摘要为了隔离卫星主要振源控制力矩陀螺的微振动，给航天器有效载荷提供超静工作环境，基于松弛型阻尼器，设计了控制力矩陀螺六自由度微振动抑制装置，完成了隔振平台的动力学建模和实验研究。首先，使用牛顿-欧拉法建立了微振动抑制装置的动力学模型，分析了微振动抑制装置在基础激励下的频域特性和隔振系统的耦合特性；搭建了微振动抑制装置实验平台，并且进行了垂向隔振实验，最后给出了激励幅值对隔振系统隔振性能影响的实验研究。结果表明，实验和理论结果吻合，采取的松弛型阻尼器，能够使隔振系统在共振频率附近放大不超过10dB，并在控制力矩陀螺主频振动处减振效果超过30dB，微振动抑制装置可以有效隔离控制力矩陀螺在轨运行期间产生的微振动。

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	王嘉登
	张高雄
	茅敏
	陆国平
	刘兴天

关键词 ：微振动, 松弛型阻尼, 控制力矩陀螺, 隔振器, 传递率

Abstract：In order to isolate micro-vibration of a satellite’s control moment gyroscope (CMG) and provide hyperstatic working environment for spacecraft payload, a 6-DOF micro-vibration suppression device based on relaxation damper for satellite CMG was proposed here, and its dynamic modeling and tests were performed. Firstly, the dynamic model of the micro-vibration suppression device was established by using Newton-Euler method to analyze the device’s frequency domain characteristics under base excitation and the vibration isolation system’s coupling features. Then, the device’s test platform was built to conduct vertical vibration isolation tests. Finally, effects of excitation amplitude value on the isolation performance of the vibration isolation system were tested. Results showed that the results of theoretical study agree well with those of tests; using relaxation damper can make the vibration transmissibility of the vibration isolation system be no more than 10 dB near the system resonance frequency; the vibration reduction effect at the main frequency of CMG is more than 30 dB; the device can effectively isolate the micro-vibration generated by CMG during its orbital operation.

Key words： micro-vibration relaxation damper control moment gyroscope (CMG) isolator transmissibility

收稿日期: 2019-07-13 出版日期: 2021-01-15

引用本文:

王嘉登，张高雄，茅敏，陆国平，刘兴天. 卫星控制力矩陀螺微振动抑制装置的动力学建模与实验研究[J]. 振动与冲击, 2021, 40(1): 1-7.
WANG Jiadeng, ZHANG Gaoxiong, MAO Min, LU Guoping, LIU Xingtian. Dynamic modeling and tests of a micro-vibration suppression device for satellite control moment gyroscope. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(1): 1-7.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I1/1

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