Low-order aberration correction of the TMT tertiary mirror prototype based on a warping harness

doi:10.1364/ao.57.001662

CIOMP OpenIR

	Low-order aberration correction of the TMT tertiary mirror prototype based on a warping harness
	Han, L. C.; Liu, C. Z.; Fan, C. B.; Li, Z. W.; Zhang, J. X.; Yin, X. L.
	2018
发表期刊	Applied Optics
ISSN	1559-128X
卷号	57 期号:7 页码:1662-1670
摘要	A warping harness is proposed to simply and efficiently correct low-order aberrations that occur during manufacturing and operation of a telescope. For the Thirty Meter Telescope (TMT) tertiary mirror, the issue to be solved by the warping harness is particularly challenging due to its complicated load conditions and limited mounting space. In this study, first, a new type of whiffletree-based warping harness configuration applied to a 1/4 -prototype TMT tertiary mirror is presented and optimized using finite element analysis (FEA) to improve the output precision of the moment actuator. Next, based on the new configuration, a simulation method for a correction process is proposed. The results show that the root mean square value of the mirror-surface error converged from 64.9 to 25.4 nm after correction, which satisfied the requirement document of TMT. Finally, combined with the analysis and calculation results, the moment actuator testing system with high-precision displacement-force-strain is established to assess the system errors. The tests of the moment actuator displacement, stress, strain-output precision, linearity, and repeatability are completed, and all errors were found to be within a controllable range. The results show the validity and feasibility of the designed warping harness, which can prove its applicability in more complicated conditions and, to a certain degree, broaden the application scope of the warping harness. (C) 2018 Optical Society of America
关键词	zernike polynomials plates Optics
DOI	10.1364/ao.57.001662
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61049
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	Han, L. C.,Liu, C. Z.,Fan, C. B.,et al. Low-order aberration correction of the TMT tertiary mirror prototype based on a warping harness[J]. Applied Optics,2018,57(7):1662-1670.
APA	Han, L. C.,Liu, C. Z.,Fan, C. B.,Li, Z. W.,Zhang, J. X.,&Yin, X. L..(2018).Low-order aberration correction of the TMT tertiary mirror prototype based on a warping harness.Applied Optics,57(7),1662-1670.
MLA	Han, L. C.,et al."Low-order aberration correction of the TMT tertiary mirror prototype based on a warping harness".Applied Optics 57.7(2018):1662-1670.

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