Optimization of a segmented mirror with a global radius of curvature actuation system based on multi-fidelity surrogates

doi:10.1016/j.ijleo.2021.166741

CIOMP OpenIR

	Optimization of a segmented mirror with a global radius of curvature actuation system based on multi-fidelity surrogates
	S. Wu; J. Dong; S. Xu; Z. Lu and B. Xu
	2021
发表期刊	Optik
ISSN	304026
卷号	242
摘要	Separately-polished segmented mirrors hardly meet the co-phasing surface shape error due to the fabrication difficulties. Therefore, some space-based segmented telescope system such as the James Webb Space Telescope (JWST) uses the global radius of curvature (GRoC) actuation system as an effective solution. A segmented mirror with a GRoC actuation system was optimized in this paper. The high-precision finite element model (FEM) usually has low computational efficiency, and the low-precision finite element model cannot guarantee calculation accuracy. In order to alleviate the conflict between computational cost and calculation accuracy in the optimization of a segmented mirror, multi-fidelity surrogates (MFS) based on sensitivity analysis were proposed. The surrogates were then optimized through the multi-island genetic algorithm (MIGA), and the segmented mirror produces 0.0623 ( = 632.8) surface shape error RMS per 1 mm of GRoC is corrected, which met the design requirement. Besides, it can also be deployed to solve other complicated engineering problems. 2021 Elsevier GmbH
DOI	10.1016/j.ijleo.2021.166741
URL	查看原文
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65504
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	S. Wu,J. Dong,S. Xu,et al. Optimization of a segmented mirror with a global radius of curvature actuation system based on multi-fidelity surrogates[J]. Optik,2021,242.
APA	S. Wu,J. Dong,S. Xu,&Z. Lu and B. Xu.(2021).Optimization of a segmented mirror with a global radius of curvature actuation system based on multi-fidelity surrogates.Optik,242.
MLA	S. Wu,et al."Optimization of a segmented mirror with a global radius of curvature actuation system based on multi-fidelity surrogates".Optik 242(2021).

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Optimization of a se（1459KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载