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Active maintenance of a segmented mirror based on edge and tip sensing
Wang B(王斌)1,2; Dai YC(戴懿纯)1; Jin ZY(金振宇)1; Yang, Dehua3; Xu FY(许方宇)1
Source PublicationAPPLIED OPTICS
2021-08-20
Volume60Issue:24Pages:7421-7431
DOI10.1364/AO.431763
Contribution Rank第1完成单位
Indexed BySCI ; EI
Abstract

An 8 m ring aperture segmented telescope is one of the important elements of the Chinese Giant Solar Telescope (CGST) project. In addition, active control of the primary mirror has become a key technology of the 8 m ring solar telescope (8 m RST). Due to the particularity of the ring aperture, the active maintenance of the segmented RST faces the following problem: edge detection cannot provide enough information to fulfil the closed-loop control. A scheme of using edge and tip detection to complete the active maintenance of an 8 m RST has been proposed. To study the feasibility and performance of edge detection combined with tip detection, we built a workbench of a two-segmented mirror and carried out an active maintenance analysis and experiment. Two capacitive sensors were used to detect the edge height change between the segments, and a Shack-Hartmann sensor was used to detect the tip and tilt change of the segment. A stable mirror figure was achieved during 100 min, and the mirror figure error was maintained at 18.94 nm. This work will provide reference for the implementation of the active control for a segmented ring telescope and also give evidence for the choice of the primary mirror of the CGST. (C) 2021 Optical Society of America

Funding ProjectNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[U1531110] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[U1831134] ; [11573068]
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[U1531110, U1831134] ; [11573068]
Language英语
Subject Area物理学 ; 光学 ; 天文学 ; 天文学其他学科
MOST Discipline Catalogue理学::天文学 ; 工学::光学工程 ; 工学::仪器科学与技术
SubtypeArticle
PublisherOPTICAL SOC AMER
Publication Place2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
ISSN1559-128X
URL查看原文
WOS IDWOS:000687563200044
WOS Research AreaOptics
WOS SubjectOptics
WOS KeywordKECK TELESCOPES
EI Accession Number20213410804915
EI KeywordsMirrors
EI Classification Number732 Control Devices - 741.3 Optical Devices and Systems - 913.5 Maintenance - 961 Systems Science
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Document Type期刊论文
Version出版稿
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24552
Collection天文技术实验室
Corresponding AuthorDai YC(戴懿纯)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China;
2.University of Chinese Academy of Sciences, Beijing 100049, China;
3.Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang B,Dai YC,Jin ZY,et al. Active maintenance of a segmented mirror based on edge and tip sensing[J]. APPLIED OPTICS,2021,60(24):7421-7431.
APA Wang B,Dai YC,Jin ZY,Yang, Dehua,&Xu FY.(2021).Active maintenance of a segmented mirror based on edge and tip sensing.APPLIED OPTICS,60(24),7421-7431.
MLA Wang B,et al."Active maintenance of a segmented mirror based on edge and tip sensing".APPLIED OPTICS 60.24(2021):7421-7431.
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