Combined supporting structure of thin wall joint cylinder and supporting bar between primary mirror and second mirror in space camera

LI Wei; LIU Hong-wei; GUO QUAN-feng; WANG HAI-ping

doi:10.3788/OPE.20101812.2633

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Combined supporting structure of thin wall joint cylinder and supporting bar between primary mirror and second mirror in space camera

Article | 更新时间：2020-08-12

- Combined supporting structure of thin wall joint cylinder and supporting bar between primary mirror and second mirror in space camera
- Optics and Precision Engineering Vol. 18, Issue 12, Pages: 2633-2641(2010)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20101812.2633
  CLC： V475.3;TH703
- Received：04 March 2010，
  
  Revised：10 May 2010，
  
  Published Online：25 December 2010，
  
  Published：25 December 2010
- 稿件说明：
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李威, 刘宏伟, 郭权锋, 王海萍. 空间相机主次镜间的薄壁筒和支杆组合支撑结构[J]. 光学精密工程, 2010,18(12): 2633-2641

LI Wei, LIU Hong-wei, GUO QUAN-feng, WANG HAI-ping. Combined supporting structure of thin wall joint cylinder and supporting bar between primary mirror and second mirror in space camera[J]. Editorial Office of Optics and Precision Engineering, 2010,18(12): 2633-2641
李威, 刘宏伟, 郭权锋, 王海萍. 空间相机主次镜间的薄壁筒和支杆组合支撑结构[J]. 光学精密工程, 2010,18(12): 2633-2641 DOI： 10.3788/OPE.20101812.2633.

LI Wei, LIU Hong-wei, GUO QUAN-feng, WANG HAI-ping. Combined supporting structure of thin wall joint cylinder and supporting bar between primary mirror and second mirror in space camera[J]. Editorial Office of Optics and Precision Engineering, 2010,18(12): 2633-2641 DOI： 10.3788/OPE.20101812.2633.

摘要

为了满足大口径、长焦距空间相机中次镜相对于主镜的位置精度要求

设计并研制了主次镜间的支撑结构

分析和试验验证了组合支撑结构的稳定性。首先

根据给定的光学系统

确定了主次镜之间采用薄壁筒和支杆组合的支撑结构形式

对比了支撑杆和薄壁筒的结构形式以及二者之间的连接方式

通过优化

完成了组合支撑结构的设计。然后

讨论了重力对支撑结构的影响

并进行了固有频率和正弦振动响应分析。最后

通过量级逐增力学试验

采用光学方法测量了主、次镜间的角度变化量

验证了支撑结构的结构稳定性。试验结果表明:主、次镜间的角度变化量<10

组合支撑结构的一阶基频>75 Hz。这些结果满足主、次镜间角度变化量要求

具有较好的结构稳定性。

Abstract

To meet the relative position request of the second mirror and the primary mirror in a large-aperture and long-focal-length space camera

a combined supporting structure between the primary mirror and the second mirror was designed and manufactured

and the stability of the combined supporting structure was confirmed through the analysis and tests. Firstly

according to the optical system

the combined supporting structure which combined a thin wall joint cylinder and a supporting bar was designed. The structure forms of supporting bar and joint cylinder were compared and their connection modes were discussed. Then

the gravity response

characteristic frequency and sinusoidal vibration responses of the supporting structure were analyzed. Finally

the supporting structure stability was validated by the mechanical tests and optical measurement. The results indicate that the angle displacement between the primary mirror and the second mirror is less than 10 and the first-order natural frequency of supporting structure is greater than 75 Hz

which shows that the supporting struc-ture has a better structure stability

and can satisfy the usage requirements of space cameras.

关键词

Keywords

references

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Related Institution

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Key Laboratory of Advanced Micro-structured Materials， Ministry of Education， Tongji University

Optoelectronic Manufacturing Engineering Center， Shanghai Institute of Technical Physics， Chinese Academy of Sciences

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