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Design and optimization for main support structure of a large-area off-axis three-mirror space camera
Wei, L.; L. Zhang; X. X. Gong and D. M. Ma
2017
Source PublicationApplied Optics
Volume56Issue:4
AbstractTo ensure excellent dynamic and static performance of large-area, off-axis three-mirror anastigmat (TMA)-space cameras, and to realize a lighter weight for the entire system, a truss support structure design is applied in this study. In contrast to traditional methods, this paper adopts topology optimization based on the solid isotropic materials with penalization method on the truss structure design. Through reasonable object function and constraint choice, optimal topology results that have concerned the effect of gravity in the X, Y, and Z axis are achieved. Subsequently, the initial truss structure is designed based on the results and manufacturing technology. Moreover, to reduce the random vibration response of the secondary mirror and fold mirror without mechanical performance decline of the whole truss, a weighted optimization of truss size is proposed and the final truss structure is achieved. Finite element analysis and experiments have confirmed the reliability of the design and optimization method. The designed truss-structure camera maintains excellent static performance with the relative optical axis angle between the primary mirror and corresponding mirrors (secondary mirror and fold mirror) being less than 5.3 in. Dynamic performances, such as random and sinusoidal vibration responses, also met the requirements that the acceleration RMS value for mount points of the fold mirror should be less than 20 g and the primary frequency reached 97.2 Hz. (C) 2017 Optical Society of America
Indexed Bysci ; ei
Language英语
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/59308
Collection中科院长春光机所知识产出
Recommended Citation
GB/T 7714
Wei, L.,L. Zhang,X. X. Gong and D. M. Ma. Design and optimization for main support structure of a large-area off-axis three-mirror space camera[J]. Applied Optics,2017,56(4).
APA Wei, L.,L. Zhang,&X. X. Gong and D. M. Ma.(2017).Design and optimization for main support structure of a large-area off-axis three-mirror space camera.Applied Optics,56(4).
MLA Wei, L.,et al."Design and optimization for main support structure of a large-area off-axis three-mirror space camera".Applied Optics 56.4(2017).
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