大口径主镜轻量化结构参数的优化设计

叶伟楠; 董吉洪

doi:10.3788/CO.20120503.0222

大口径主镜轻量化结构参数的优化设计

doi: 10.3788/CO.20120503.0222

叶伟楠^1,2,
董吉洪^1, ,

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.
中国科学院研究生院,北京 100039

基金项目:

国家科技部国际科技合作资助项目(No.2011DFA50590)

详细信息

通讯作者:
董吉洪

中图分类号: V447.3; TH703
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- 被引次数: 0
出版历程
- 收稿日期: 2012-02-21
- 修回日期: 2012-03-23
- 刊出日期: 2012-06-10

Optimized design of lightweight structural parameters for large-aperture primary mirror

YE Wei-nan^1,2,
DONG Ji-hong^{1
, ,}

1.
Changchun Institute of Optics,Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun 130033,China;
2.
Graduate University of Chinese Academy of Sciences,Beijing 100039,China

摘要

摘要: 针对空间遥感器中大口径主镜的轻量化结构设计引入了基于Kriging近似模型的多目标遗传优化方法,以2 m口径SiC主镜为例对其轻量化结构参数进行了优化设计。采用拉丁超立方法对优化参数进行试验设计,建立了Kriging模型,并用多目标遗传算法迭代求得了最优解。优化后得到了质量为243 kg的2 m口径SiC主镜,其面形精度达到了25.7 nm PV,4.7 nm RMS,轻量化率为84%。试验结果验证了此优化设计方法的可行性,为大口径主镜的轻量化结构参数优化设计提供了借鉴和参考。
- 空间相机 /
- 主镜 /
- 轻量化 /
- 参数优化 /
- 拉丁超立方法 /
- 多目标遗传算法
Abstract: As for the lightweight structure of a large-aperture primary mirror in remote sensors, this paper introduces an optimized multi-target Genetic Algorithm(GA) based on the Kriging approximate model to design all lightweight structure paramaters for a 2 m-aperture SiC primary mirror. The latin hypercube method is used to build the Kriging model and do the experimental design of optimized parameters, and then a optimal solution is obtained through the multi-target GA(NSGA II). After the optimization, the 2 m-aperture SiC primary mirror weights 243 kg, the surface accuracy reaches 25.7 nm PV, 4.7 nm RMS and the total lightweight rate is 84%. The experimental result proves the feasibility of this optimization method and it can be a reference for the future lightweight optimization design of the structural parameters of large-aperture primiary mirrors.
- space camera /
- primary mirror /
- lightweight /
- parameter optimization /
- latin hypercube method /
- NSGA II

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参考文献(1)

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