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Active correction of 1.23 m SiC mirror using bending mode
Zhu, Y.; T. Chen; J.-L. Wang; H.-Z. Li and X.-X. Wu
2017
发表期刊Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号25期号:10
摘要As active correction of a large aperture SiC mirror with high stiffness is vulnerable to many calculation errors by direction least square method or free resonance method, this paper proposes a primary surface correction algorithm using bending mode to calculate and optimize the active force and to improve the correction capability. Firstly, a series of mathematical transformations were performed on the influence matrix of the primary mirror, and a set of orthogonal bending modes of primary mirror were obtained. Then, correction targets were fitted in bending modes to calculate the correction force. An 1.23 m SiC mirror and a support system were modeled by finite element analysis and the algorithm was verified by simulation experiments. Moreover, an active support system for the 1.23 m SiC mirror was set up to correct primary surface and a further optimization for the algorithm was conducted based on this system. The experiments show that the surface error is corrected from 0.23 RMS to 0.048 RMS by the proposed bending mode. Results of analysis and experiment demonstrate that the algorithm by bending mode efficiently reduces active force ranges and improves correction capability. It is significant for the active correction of large aperture SiC mirrors with high stiffness. 2017, Science Press. All right reserved.
收录类别ei
语种中文
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/59503
专题中科院长春光机所知识产出
推荐引用方式
GB/T 7714
Zhu, Y.,T. Chen,J.-L. Wang,et al. Active correction of 1.23 m SiC mirror using bending mode[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2017,25(10).
APA Zhu, Y.,T. Chen,J.-L. Wang,&H.-Z. Li and X.-X. Wu.(2017).Active correction of 1.23 m SiC mirror using bending mode.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,25(10).
MLA Zhu, Y.,et al."Active correction of 1.23 m SiC mirror using bending mode".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 25.10(2017).
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