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Proceedings Paper

Design and precision performance research of exact constraint support structure
Author(s): Xiao-juan Chen; Wen-kai Wu; Xue-nong Fu; Yuan-li Xu
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Paper Abstract

Exact constraint design can control the interrelation of the components by ensuring the number of the constraints being equal to the number of the degrees of freedom needed. The kinematic mounts which is a point contact linkup structure are the representative structure of exact constraint. It has μm orientation accuracy and 20nm relocation accuracy with low cost. According to the conception and design rule of the kinematic mounts the paper introduces its material choice, stability estimation and accuracy analysis. Two kinds of kinematic mounts sample (upside down and side hang) are designed that can be applied in the large aperture mirrors of ICF (Inertially Confined Fusion, ICF) facility. Mirror mounts of the samples are modularized LRU (Line Replace Unit, LRU). It can provide accurate allocated and relocated accuracy by adopting the kinematic design. Theoretical analysis, accuracy test of relocation and mechanic test of the samples are processed. The sample's maximal angle error of the two samples are less than 2" (design request less than ±40") and its relocating angle error less than 2.3"; (the upside down Sample) and 6.2" (the Side-hang Sample).

Paper Details

Date Published: 13 October 2010
PDF: 5 pages
Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 76541K (13 October 2010); doi: 10.1117/12.867499
Show Author Affiliations
Xiao-juan Chen, China Academy of Engineering Physics (China)
Wen-kai Wu, China Academy of Engineering Physics (China)
Xue-nong Fu, China Academy of Engineering Physics (China)
Yuan-li Xu, China Academy of Engineering Physics (China)


Published in SPIE Proceedings Vol. 7654:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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