| 空间相机主镜加工状态下的有限元分析 |
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| 引用本文： | 吴永前,吴时彬,伍凡,曾志革,高平起,陈强.空间相机主镜加工状态下的有限元分析[J].光电工程,2001,28(5):9-13. |
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| 作者姓名： | 吴永前 吴时彬 伍凡 曾志革 高平起 陈强 |
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| 作者单位： | 中国科学院光电技术研究所 |
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| 基金项目： | 国家863高技术资助项目。 |
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| 摘 要： | 采用轻量化结构的空间相机主镜，因为镜体力学分布较传统的实心镜体复杂得多，因而轻型镜面的加工较之实心镜面复杂得多。镜子在加工中的支撑方式和受力状态是影响镜面加工精度的主要因素之一，没有严格准确的数学分析难以保证镜子的加工精度，本文用有限元法首次对正在加工中的空间相机主镜进行力学分析，根据变形规律设计了几种支撑方案，从中选定了主镜的最终支撑结构。镜面面形的加工精度实现PV值λ／10，MS值λ／62。满足使用要求。
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| 关 键 词： | 空间相机 有限元分析 主镜加工状态 |
| 文章编号： | 1003-501(2001)05-0009-05 |
Analysis of the Primary Mirror for Space Camera under Processing Conditions by Finite Element Method |
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| WU Yong-qian,WU Shi-bin,WU Fan ZENG Zhi-ge,GAO Ping-qi,CHEN Qiang.Analysis of the Primary Mirror for Space Camera under Processing Conditions by Finite Element Method[J].Opto-Electronic Engineering,2001,28(5):9-13. |
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| Authors: | WU Yong-qian WU Shi-bin WU Fan ZENG Zhi-ge GAO Ping-qi CHEN Qiang |
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| Abstract: | For the primary mirror with lightweight structure used in space camera, since its mechanics distribution is more complex than that the solid mirror, the processing of the lightweight mirror is more difficult. The supporting mode and forced state are the main factors affecting the mirror surface processing accuracy. The processing accuracy cannot be ensured without strict and accurate mathematical analysis. The mechanics analysis for the primary mirror used in the space camera under the processing conditions is first carried out by finite element method. Several supporting schemes are designed according to the deformation rules and the final supporting structure for the primary mirror is selected among them. The processing accuracy for the mirror surface is l/10(PV), l/62(RMS), thus the operating requirements have been fulfilled. |
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| Keywords: | Space camera Finite element analysis Support structure |
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