Institutional Repository of Radio Astronomy Research Laboratory
| Real-time Closed-loop Active Surface Technology of a Large Radio Telescope | |
Zhang, Yong1,2; Li, Guoping1,2; Zhou, Guohua1,2; Lu, Qishuai1,2; Zuo, Heng1,2; Wang, You1,2; Zhang, Hui1,2; Li, Aihua1,2; Zhang, Chao1,2; Li, Yeping1,2; Wu, Xuhao1,2; Li, Hao1,2; Hu, Tianzhu1,2; Xiang, BinBin3 ; Wang, Na3
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| 2022 | |
| Source Publication | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
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| ISSN | 0004-6280 |
| Volume | 134Issue:1031Pages:015003 |
| Contribution Rank | 3 |
| Abstract | 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. |
| DOI | 10.1088/1538-3873/ac32af |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | FOCUS ; SYSTEM |
| Funding Project | 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 Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000741605000001 |
| Publisher | IOP Publishing Ltd |
| Funding Organization | National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Development and Reform Commission |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4439 |
| Collection | 射电天文研究室_天线技术实验室 110米口径全可动射电望远镜（QTT）_技术成果 射电天文研究室_脉冲星研究团组 |
| Corresponding Author | Zuo, Heng |
| Affiliation | 1.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, 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, Xinjiang Astron Observ, Urumqi 830011, Peoples R China |
| Recommended Citation 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):015003. |
| 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),015003. |
| 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):015003. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Zhang-2022-Real-time（163KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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