Modeling and experimental study of dynamic characteristics of the moment wheel assembly based on structural coupling

doi:10.1016/j.ymssp.2020.107007

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	Modeling and experimental study of dynamic characteristics of the moment wheel assembly based on structural coupling
	M. Xia; C. Qin; X. Wang and Z. Xu
刊名	Mechanical Systems and Signal Processing
	2021
卷号	146
ISSN号	8883270
DOI	10.1016/j.ymssp.2020.107007
英文摘要	The microvibration of the satellite moment wheel assembly (MWA) is an essential input for integrated simulation analysis of spacecraft microvibration, which forms the basis for spacecraft vibration suppression. Therefore, it is important to guarantee high-precision data from ground measurements of vibration sources for research into the stabilization accuracy of large space telescopes. In general, a coupled wheel-to-structure disturbance model is more representative of the real environment, and two aspects of the coupling need to be considered: coupling caused by insufficient MWA stiffness and coupling caused by the vibration source installation structure. Therefore, this paper presents the relevant work conducted on these two coupling aspects. First, this paper proposes the amplification factor coefficient, which considers structural coupling based on the classical vibration model of the MWA. The average error in this case could be within 5%. This approach could reduce the computational requirements without affecting the quality of the results. Additionally, as the mass of the MWA is greater and the disturbance output is more obvious. The structural coupling with the installation foundation is unavoidable. In this paper, the effects of installation stiffness on the disturbance measurements are analyzed based on the dynamic mass measurement method and quantitative impedance theory. Finally, based on the above theory, verification testing of the disturbance and transfer models of the MWA is performed and the test results are compared with the simulation results; it is shown that a level of accuracy within 5% can be achieved. 2020 Elsevier Ltd
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65427]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	M. Xia,C. Qin,X. Wang and Z. Xu. Modeling and experimental study of dynamic characteristics of the moment wheel assembly based on structural coupling[J]. Mechanical Systems and Signal Processing,2021,146.
APA	M. Xia,C. Qin,&X. Wang and Z. Xu.(2021).Modeling and experimental study of dynamic characteristics of the moment wheel assembly based on structural coupling.Mechanical Systems and Signal Processing,146.
MLA	M. Xia,et al."Modeling and experimental study of dynamic characteristics of the moment wheel assembly based on structural coupling".Mechanical Systems and Signal Processing 146(2021).