Design of truss adjusting mechanism for secondary mirror of large aperture telescope

doi:10.37188/OPE.20233107.1043

CIOMP OpenIR

	Design of truss adjusting mechanism for secondary mirror of large aperture telescope
	B. Lu, B. Zhang, F. Wang, F. Yang and J. Chen
	2023
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	1004924X
卷号	31 期号:7 页码:1043-1052
摘要	In large-aperture telescopes, the relative positions of the primary and secondary mirrors must conform to stringent specifications. The secondary-mirror system is frequently designed as an adjustable mechanism with several degrees of freedom, owing to the high quality of the primary mirror. This significantly affects the telescope imaging. The secondary-mirror truss and adjustment mechanism are combined and designed to decrease the overall height of the telescope. Moreover, a secondary-mirror truss-adjustment mechanism that can be employed in large-diameter telescopes is designed. First, a detailed description of the designed adjustment mechanism is given, followed by static and modal analyses, and finally, a kinematic-performance test of the experimental prototype. The moving stroke of the designed mechanism in the Z direction can reach ±5 mm and the absolute positioning accuracy is better than 16 μm. The deflection stroke in the X/Y direction can reach ±0. 574° and the absolute positioning accuracy is better than 6.4″. The mechanism complies with the itinerary requirements and secondary-mirror adjustment accuracy for large-diameter telescopes. © 2023 Chinese Academy of Sciences. All rights reserved.
DOI	10.37188/OPE.20233107.1043
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67742
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	B. Lu, B. Zhang, F. Wang, F. Yang and J. Chen. Design of truss adjusting mechanism for secondary mirror of large aperture telescope[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2023,31(7):1043-1052.
APA	B. Lu, B. Zhang, F. Wang, F. Yang and J. Chen.(2023).Design of truss adjusting mechanism for secondary mirror of large aperture telescope.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,31(7),1043-1052.
MLA	B. Lu, B. Zhang, F. Wang, F. Yang and J. Chen."Design of truss adjusting mechanism for secondary mirror of large aperture telescope".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 31.7(2023):1043-1052.

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