Gravity compensation optimization algorithm for large aperture spatial optical telescope

doi:10.3788/OPE.20182611.2764

CIOMP OpenIR

	Gravity compensation optimization algorithm for large aperture spatial optical telescope
	He, Xu; Yang, Xue; Li, Yi; Zhang, Xiao-Hui
	2018
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	1004924X
卷号	26 期号:11 页码:2764-2775
摘要	Following the increase in the aperture of space optical telescopes, the inconsistency in space and ground mechanical environment results in serious degradation of the system image quality in orbit. Gravity needs to be compensated during the alignment and test procedure of a space telescope. However, quantitative analysis and optimization methods for unloading the point coordinate have not been completely developed. First, the deformation mechanism of a large-aperture telescope under 1g gravity was studied. According to the separate closed-loop location and closed-loop mass, a mathematical algorithm was developed to optimize the position of the unloading points. By performing co-simulation, we were able to optimize the coordinates. Subsequently, simulation experiments were performed to verify the actual effect of the telescope model under different unloading parameters. The closed-loop location analysis method improves the displacement of the highly sensitive optical components from 370 m, 36" to 72.9 m, 0.3". The maximum relative deviation of the closed-loop mass method from the set value is approximately 7.4%. The closed-loop location gravity-compensation method can achieve a value closer to 0 g. However, its error sensitivity is high, and realizing the engineering results is difficult. The total unloading rate is approximately 75% based on the closed-loop mass gravity-compensation model, and the sensitivity is low. This model can satisfy the demand for mechanical environment of semi-physical simulation experiments using gravity unloading. 2018, Science Press. All right reserved.
关键词	Gravitation Error compensation Location Optical telescopes Testing Unloading
DOI	10.3788/OPE.20182611.2764
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60678
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	He, Xu,Yang, Xue,Li, Yi,et al. Gravity compensation optimization algorithm for large aperture spatial optical telescope[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2018,26(11):2764-2775.
APA	He, Xu,Yang, Xue,Li, Yi,&Zhang, Xiao-Hui.(2018).Gravity compensation optimization algorithm for large aperture spatial optical telescope.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,26(11),2764-2775.
MLA	He, Xu,et al."Gravity compensation optimization algorithm for large aperture spatial optical telescope".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 26.11(2018):2764-2775.

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