Design and optimization of trussed supporting structure for off-axis three-mirror reflective space camera

ZHANG Lei; JIA Xue-zhi

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Design and optimization of trussed supporting structure for off-axis three-mirror reflective space camera

Article | 更新时间：2020-08-12

- Design and optimization of trussed supporting structure for off-axis three-mirror reflective space camera
- Optics and Precision Engineering Vol. 17, Issue 3, Pages: 603-608(2009)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院研究生院,北京 100039
- 作者简介：
- 基金信息：
- DOI：
  CLC： V475.2
- Received：09 July 2008，
  
  Revised：07 August 2008，
  
  Published Online：25 March 2009，
  
  Published：25 March 2009
- 稿件说明：
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张雷, 贾学志. 大型离轴三反相机桁架式主支撑结构的设计与优化[J]. 光学精密工程, 2009,17(3): 603-608

ZHANG Lei, JIA Xue-zhi. Design and optimization of trussed supporting structure for off-axis three-mirror reflective space camera[J]. Editorial Office of Optics and Precision Engineering, 2009,17(3): 603-608
张雷, 贾学志. 大型离轴三反相机桁架式主支撑结构的设计与优化[J]. 光学精密工程, 2009,17(3): 603-608 DOI：

ZHANG Lei, JIA Xue-zhi. Design and optimization of trussed supporting structure for off-axis three-mirror reflective space camera[J]. Editorial Office of Optics and Precision Engineering, 2009,17(3): 603-608 DOI：

摘要

为了提高空间相机主支撑结构的刚度

减轻结构质量

根据大型离轴三反空间相机的特点

研究了其主支撑结构的形式。应用Rayleigh法推导了桁架式主支撑结构的基频计算公式

分析了桁架杆间夹角对其基频的影响

并以此为基础研究了其优化方法和优化过程。优化设计了某预研空间相机的桁架式主支撑结构并对其结构特性进行了分析。分析结果表明

设计的主支撑机构的质量减轻了22 kg

基频可达146 Hz

表明本研究对大型离轴三反空间相机主支撑结构的设计具有参考价值。该研究结果已成功应用于某预研相机的样机研制中。

Abstract

An optical supporting structure is studied to improve its structure stiffness and reduce the structure mass to meet the requirement of space camera. A formula to calculate fundamental frequency is proposed using Rayleigh method

and the influences of the angles between trusses on fundamental frequency are analyzed. Then

the optimization method and process are studied. Based on the analysis above

an optical supporting structure with high stiffness for a pre-research space camera is designed. The analysis results indicate that the mass of designed optical supporting structure has been reduced by 22 kg and its fundamental frequency is 146 Hz

which shows that above analysis has a certain instructional significance for the design of optical supporting structures in high-resolution off-axis three-mirror reflective space cameras.

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references

KEITH B, DOYLE.Design of optical structures for maximum fundamental frequency [J]. SPIE, 1993,1998:50-59.[2] PRESSEL P. Generic telescope truss [J]. SPIE, 1991,1532:50-56.[3] WADE R,FELL B. Structural analysis and active flexure compensation of the high resolution optical spectrograph for the gemini south telescope[J]. SPIE, 1998, 3355: 307-314.[4] PEARLMAN J,SEGAL C,LIAO L,et al.. Development and operations of the EO-1 hyperion imaging spectrometer[J].SPIE, 2004,4135:243-252.[5] FORMAN S E. EO-1 advanced land imager (ALI) technology transfer forum . 2001,9.[6] 胡企千,刘梅. 空间太阳望远镜镜筒桁架的优化[J]. 光学精密工程,2003,11(2):151-156. HU Q Q,LIU M. Optimization of tube truss of space telescope [J]. Opt. Precision Eng., 2003,11(2):151-156.(in Chinese)[7] 陈志平,陈志远,杨世模. 空间太阳望远镜主桁架的模态分析与试验[J]. 光电工程,2004,31(12):1-3. CHEN ZH P, CHEN ZH Y, YANG SH M. Modal analysis and experiment on the main truss of space solar telescope[J]. Opto-Electronic Engineering, 2004,31(12):1-3.(in Chinese)[8] 陈荣利,樊学武. 高分辨率TDICCD相机轻量化技术[J]. 航天返回与遥感,2003,24(2):20-24. CHEN R L, FAN X W. Lightweightening technology for high resolution TDICCD camera [J]. Spacecraft Recovery＆Remote Sensing,2003,24(2):20-24.(in Chinese)

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