Optimum design of flexible support structure for space mirror
文献类型：会议论文
| 作者 | Sun, Li Jun1,3; Zhang, Yuan Qing1; Li, Si Yuan2; Zhang, Zhao Hui2; Li, Li Bo2 |
| 出版日期 | 2019 |
| 会议日期 | 2019-07-07 |
| 会议地点 | Beijing, China |
| 关键词 | Kinematic support structure Bipod Sensitivity analysis Parameter optimization Finite element analysis. |
| 卷号 | 11341 |
| DOI | 10.1117/12.2543127 |
| 英文摘要 | To minimize the assembly stress and thermal stress introduced by the support structure, and ensure the high surface accuracy and high thermal stability of space mirror. An ultra-lightweight design of secondary mirror was carried out for some space remote sensor, and three tangential bipods were used for quasi-kinematic support. Firstly, the design principle of quasi-kinematic support structure was investigated, and advantages of bipod kinematic support were analyzed from the angle of degree of freedom decoupling. Based on structure designed above, the finite element model was established. Taking surface accuracy of the mirror as optimization objectives, the integrated optimization method was adopted to extract the structural parameters with high sensitivity on the surface accuracy in the flexible support structure, and parameters optimization design was carried out. Finally, the static and dynamic characteristics of the optimized mirror assembly were analyzed. The analysis results showed that the surface shape accuracy (RMS) of the mirror assembly is better than 1 nm under a load case of 1g gravity when the optical axis is level. Surface accuracy (RMS) is better than 2 nm under the load case of 4 uniform temperature rise. The first-order natural frequency of the secondary mirror assembly is 587 Hz. The optimized mirror support structure can well unload the additional deformation caused by the support structure, and has good dynamic stiffness, which verifies that the designed mirror and its support structure are reasonable, and the optimization design method is reliable. This paper provides a reference and idea for the design of flexible support structure of space mirror. © 2019 SPIE. |
| 产权排序 | 1 |
| 会议录 | AOPC 2019: Space Optics, Telescopes, and Instrumentation
 |
| 会议录出版者 | SPIE |
| 语种 | 英语 |
| ISSN号 | 0277786X;1996756X |
| ISBN号 | 9781510634541 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/93214]  |
| 专题 | 西安光学精密机械研究所_光学影像学习与分析中心 |
| 作者单位 | 1.Key Laboratory of Spectral Imaging Technology of CAS, Xi'an; 710119, China; 2.Tianjin Medical Technology Development Co. Ltd, Tianjin; 300000, China 3.Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; |
| 推荐引用方式 GB/T 7714 | Sun, Li Jun,Zhang, Yuan Qing,Li, Si Yuan,et al. Optimum design of flexible support structure for space mirror[C]. 见:. Beijing, China. 2019-07-07. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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