Design of a Segmented Mirror with a Global Radius of Curvature Actuation System: Contributions of Multiple Surrogates

doi:10.3390/app10238375

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	Design of a Segmented Mirror with a Global Radius of Curvature Actuation System: Contributions of Multiple Surrogates
	S. H. Wu,J. H. Dong,S. Y. Xu,Z. R. Lu and B. Q. Xu
	2020
发表期刊	Applied Sciences-Basel
卷号	10 期号:23 页码:14
摘要	Due to fabrication difficulties, separately-polished segmented mirrors cannot meet the co-phasing surface shape error requirements in the segmented telescope system. Applying the global radius of curvature (GRoC) actuation system for the individual segments has become an effective solution in space-based telescopes. In this paper, we designed a segmented mirror with a GRoC actuation system. The direct optimization by numerical simulations has low computational efficiency and is not easy to converge for optimizing the actuation point's position on the segmented mirror. For this problem, three common surrogates, including polynomial response surface (PRS), radial basis function neural network (RBFNN), and kriging (KRG), were summed to propose the multiple surrogates (MS) which have the higher approximate ability. The surrogates were then optimized through the multi-island genetic algorithm (MIGA), and the segmented mirror met the design requirement. Compared with direct optimization through numerical simulations, the results show that the proposed multiple-surrogate-based optimization (MSBO) methodology saves computational cost significantly. Besides, it can be deployed to solve other complex optimization problems.
DOI	10.3390/app10238375
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收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64420
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. H. Wu,J. H. Dong,S. Y. Xu,Z. R. Lu and B. Q. Xu. Design of a Segmented Mirror with a Global Radius of Curvature Actuation System: Contributions of Multiple Surrogates[J]. Applied Sciences-Basel,2020,10(23):14.
APA	S. H. Wu,J. H. Dong,S. Y. Xu,Z. R. Lu and B. Q. Xu.(2020).Design of a Segmented Mirror with a Global Radius of Curvature Actuation System: Contributions of Multiple Surrogates.Applied Sciences-Basel,10(23),14.
MLA	S. H. Wu,J. H. Dong,S. Y. Xu,Z. R. Lu and B. Q. Xu."Design of a Segmented Mirror with a Global Radius of Curvature Actuation System: Contributions of Multiple Surrogates".Applied Sciences-Basel 10.23(2020):14.

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