Optimization of lightweight structure and supporting bipod flexure for a space mirror

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题名:	Optimization of lightweight structure and supporting bipod flexure for a space mirror
作者:	陳怡呈;Chen, Yi-Cheng;Huang, Bo-Kai;You, Zhen-Ting;Chan, Chia-Yen;Huang, Ting-Ming
贡献者:	工學院機械工程學系
关键词:	Design analysis;Design optimization;Finite element method;Flexing;Lightweight;Optimization;Primary mirrors;Weight reduction
日期:	2016-12-20
上传时间:	2026-04-23 15:21:38 (UTC+8)
出版者:	The Optical Society;United States
摘要:	摘要： This article presents an optimization process for integrated optomechanical design. The proposed optimization process for integrated optomechanical design comprises computer-aided drafting, finite element analysis (FEA), optomechanical transfer codes, and an optimization solver. The FEA was conducted to determine mirror surface deformation; then, deformed surface nodal data were transferred into Zernike polynomials through MATLAB optomechanical transfer codes to calculate the resulting optical path difference (OPD) and optical aberrations. To achieve an optimum design, the optimization iterations of the FEA, optomechanical transfer codes, and optimization solver were automatically connected through a self-developed Tcl script. Two examples of optimization design were illustrated in this research, namely, an optimum lightweight design of a Zerodur primary mirror with an outer diameter of 566 mm that is used in a spaceborne telescope and an optimum bipod flexure design that supports the optimum lightweight primary mirror. Finally, optimum designs were successfully accomplished in both examples, achieving a minimum peak-to-valley (PV) value for the OPD of the deformed optical surface. The simulated optimization results showed that (1) the lightweight ratio of the primary mirror increased from 56% to 66%; and (2) the PV value of the mirror supported by optimum bipod flexures in the horizontal position effectively decreased from 228 to 61 nm. 其他題名： Appl Opt 出版者： United States 出版日期： 2016-12-20 出處： Applied Optics, 2016-12, Vol.55 (36), p.10382-10391 資源來源： Optica Journals (NTUSG) 識別號： ISSN: 1559-128X 識別號： EISSN: 2155-3165 識別號： EISSN: 1539-4522 識別號： DOI: 10.1364/AO.55.010382 識別號： PMID: 28059268
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