| 空间光学遥感器长圆形反射镜组件优化设计与分析 |
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| 引用本文： | 徐炜,吴清文,翟岩,郭万存,徐振邦,傅家.空间光学遥感器长圆形反射镜组件优化设计与分析[J].红外与激光工程,2013,42(3):752-757. |
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| 作者姓名： | 徐炜 吴清文 翟岩 郭万存 徐振邦 傅家 |
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| 作者单位： | 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; |
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| 基金项目： | 部XX-CCD 相机预研项目 |
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| 摘 要： | 为了减轻空间光学遥感器反射镜的镜体质量，并降低反射镜在恶劣空间环境下的面形误差，利用有限元技术对某长圆形反射镜组件进行了优化设计。首先在反射镜进行轻量化后，对其进行支撑点位置优化和结构拓扑优化；其次对柔性支撑进行优化设计，引入了一种新型柔性铰链，解决了因背板热变形导致反射镜径向变形的问题，改善了反射镜面形精度。优化后的反射镜面形RMS 最大值为14.6 nm，小于/30（=632.8 nm），一阶固有频率大于100 Hz，满足了设计要求，证明了该优化设计方法合理可行。
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| 关 键 词： | 空间光学遥感器 长圆形反射镜 拓扑优化 柔性支撑 |
| 收稿时间： | 2012-07-22 |
Optimal design and analysis of long circular reflector subassembly in the space optical remote sensor |
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| Affiliation: | 1.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;2.University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | The long-circular mirror were optimized with the finite element technology. It could reduce the mass of reflector in space optical remote sensor and minish shape error of the mirror, which was running in the bad environment of the space. Firstly, the reflector was lightweighted and optimized in terms of supports location and structural topology. Secondly, the flexible support was optimized. A new flexible hinge was stated out. The radial deformation was usually not matched between mirror and its backplane because of different coefficients of expansion. The problem was solved with flexible support and the mirror shape accuracy was improved. The maximum value of RMS error, 14.6 nm, was less than the design requirements,/30 (=632.8 nm). The first -order natural frequency is bigger than 100 Hz which shows that the optimization design method is reasonable and feasible. |
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