Optimization design of flexible and damping support structure of space camera

Lin LI; Dong WAND; Hong-bo YANG; Lu-yang TAN; Zhan-lei SUN

doi:10.3788/OPE.20162407.1677

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Optimization design of flexible and damping support structure of space camera

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-08-13

- Optimization design of flexible and damping support structure of space camera
- Optics and Precision Engineering Vol. 24, Issue 7, Pages: 1677-1684(2016)
- 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 130033
  2.中国科学院大学, 北京 100039
  3.长光卫星技术有限公司, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162407.1677
  CLC： V447.3
- Received：12 November 2015，
  
  Accepted：13 December 2015，
  
  Published：2016-07
- 稿件说明：
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Lin LI, Dong WAND, Hong-bo YANG, et al. Optimization design of flexible and damping support structure of space camera[J]. Optics and precision engineering, 2016, 24(7): 1677-1684.
DOI：

Lin LI, Dong WAND, Hong-bo YANG, et al. Optimization design of flexible and damping support structure of space camera[J]. Optics and precision engineering, 2016, 24(7): 1677-1684. DOI： 10.3788/OPE.20162407.1677.

摘要

根据高分辨率空间相机性能要求，设计了一种倒圆角直梁复合组成的双脚架柔性减振支撑结构。首先，根据某卫星结构要求初步设计了相机底部支撑结构，建立了以随机响应为目标的优化设计模型。利用尺寸优化设计了双脚架结构支腿的柔性环节，得到柔性环节最小厚度为2.5 mm。然后，对相机底部支撑结构进行了工程分析。分析结果表明，设计的支撑结构组件重量1.26 kg，基频达到1624 Hz。最后，对空间相机底部支撑结构组件进行了随机振动试验，试验结果显示：与相机结构连接处的最大响应RMS值为21.4 grms，随机响应最大相对放大率为0.93，满足空间相机支撑结构的减振要求。得到的结果验证了设计和分析的可靠性，对同类卫星相机底部支撑结构的设计具有一定的指导意义。

Abstract

According to the performance requirements of a high-resolution space camera for the bottom support structure

a flexible and damping support structure composited by a fillet feet frame and a straight beam was designed. Firstly

the bottom supporting structure of the space camera was designed based on the request of a satellite structure

and a optimized design model for the random response was established. The flexible link for the leg of two-feet frame structure was proposed with the size optimization technology

and the minimum thickness of the flexible link is 2.5 mm. Then

the support structure at the bottom of the camera was analyzed in engineering. The analysis results show that the weight of support structure components is 1.26 kg

and the fundamental frequency is 1 624 Hz. Finally

the support structure components of the space camera were tested by the random vibration test

obtained results show that the structure joint maximum response RMS value of the camera is 21.4 grms

and the random response maximum relative magnification is 0.93

satisfying the requirement of the support structure vibration of the space camera. These results verify the reliability of the design and analysis in this paper and provide a guiding for design of camera support structures of similar satellites.

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Keywords

references

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