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Real-time Closed-loop Active Surface Technology of a Large Radio Telescope

文献类型：期刊论文

作者Zhang, Yong2,3; Li, Guoping2,3; Zhou, Guohua2,3; Lu, Qishuai2,3; Zuo, Heng2,3; Wang, You2,3; Zhang, Hui2,3; Li, Aihua2,3; Zhang, Chao2,3; Li, Yeping2,3
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期2022
卷号134期号:1031页码:16
ISSN号0004-6280
DOI10.1088/1538-3873/ac32af
通讯作者Zuo, Heng(hengz@niaot.ac.cn)
英文摘要The surface accuracy of a large radio telescope's primary reflector is easily affected by gravity and temperature change during observations. An active surface system is crucial to ensure the regular operation and high-quality data output of the radio telescope. We propose a real-time closed-loop active surface system including two components. The first component, a new type of photoelectric edge sensor, detects the angle change of the adjacent panels. The second component, the displacement actuator, adjusts the panels' position and posture to compensate for the angle changes. So, over the entire observation, the closed-loop surface control system with these two components could actively maintain the primary reflector's accuracy in real time. Using this approach, we constructed an experimental active surface system for the Xinjiang Qitai 110 m Radio Telescope (QTT) to test the maintenance of the surface accuracy. The angle measurement accuracy is better than 0.'' 2, and the positioning accuracy of the displacement actuator could achieve +/- 15 mu m over the whole 50 mm stroke. The preliminary test results show that the accuracy requirements of the QTT's primary reflector surface can be met using the active surface system we propose.
WOS关键词FOCUS ; SYSTEM
资助项目National Natural Science Foundation of China[U1931207] ; National Natural Science Foundation of China[U2031207] ; National Natural Science Foundation of China[12073053] ; National Natural Science Foundation of China[U1931126] ; National Natural Science Foundation of China[1331204] ; National Key Basic Research Program of China[2015CB857100] ; National Development and Reform Commission
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000741605000001
出版者IOP Publishing Ltd
资助机构National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Development and Reform Commission
源URL[http://ir.xao.ac.cn/handle/45760611-7/4438]  
专题射电天文研究室_天线技术实验室
新疆天文台_110米口径全可动射电望远镜（SmART）_技术成果
脉冲星研究团组
通讯作者Zuo, Heng
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Key Lab Astron Opt & Technol, Nanjing 210042, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yong,Li, Guoping,Zhou, Guohua,et al. Real-time Closed-loop Active Surface Technology of a Large Radio Telescope[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2022,134(1031):16.
APA Zhang, Yong.,Li, Guoping.,Zhou, Guohua.,Lu, Qishuai.,Zuo, Heng.,...&Wang, Na.(2022).Real-time Closed-loop Active Surface Technology of a Large Radio Telescope.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,134(1031),16.
MLA Zhang, Yong,et al."Real-time Closed-loop Active Surface Technology of a Large Radio Telescope".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 134.1031(2022):16.

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来源：新疆天文台

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