Institutional Repository of Radio Astronomy Research Laboratory
| An Online Measurement and Calibration Method for a Radio Telescope Sub-Reflector Support Structure Using Fiber Bragg Grating | |
Xu, Qian1,2,3 ; Bao, Hong4
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| 2023-05-22 | |
| Source Publication | MICROMACHINES
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| Volume | 14Issue:5Pages:1093 |
| Contribution Rank | 1 |
| Abstract | The position and altitude of a sub-reflector have an important influence on the pointing accuracy of a radio telescope. With the increase of the antenna aperture, the stiffness of the support structure for the sub-reflector decreases. This causes deformation of the support structure when environmental loads, such as gravity, temperature, and wind load, are applied to the sub-reflector, which will seriously influence antenna pointing accuracy. This paper proposes an online measurement and calibration method for assessing the deformation of the sub-reflector support structure based on the Fiber Bragg Grating (FBG) sensors. Firstly, a reconstruction model between the strain measurements and the deformation displacements of a sub-reflector support structure is established based on the inverse finite element method (iFEM). In addition, a temperature-compensating device with an FBG sensor is designed to eliminate the effects of temperature variations on strain measurements. Considering the lack of the trained original correction, a non-uniform rational B spline (NURBS) curve is built to extend the sample data set. Next, a self-structuring fuzzy network (SSFN) is designed for calibrating the reconstruction model, which can further improve the displacement reconstruction accuracy of the support structure. Finally, a full-day experiment was carried out using a sub-reflector support model to verify the effectiveness of the proposed method. |
| Keyword | sub-reflector Fiber Bragg Grating (FBG) sensor self-structuring fuzzy network measurement model calibration B-spline functions |
| DOI | 10.3390/mi14051093 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | SHAPE |
| Funding Project | 奇台射电望远镜主动面调整与信号接收系统研制 ; National Key Research and Development Program of China[2021YFC2203601] ; Youth Innovation Promotion Association, CAS[Y202019] ; Natural Science Foundation of Xinjiang Autonomous Region[2022D01E85] ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments ; Ministry of Finance of China (MOF) ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[PTYQ2022YZZD01] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Instruments & Instrumentation ; Physics |
| WOS Subject | Chemistry, Analytical ; Nanoscience & Nanotechnology ; Instruments & Instrumentation ; Physics, Applied |
| WOS ID | WOS:000996747800001 |
| Publisher | MDPI |
| Funding Organization | National Key Research and Development Program of China ; Youth Innovation Promotion Association, CAS ; Natural Science Foundation of Xinjiang Autonomous Region ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments ; Ministry of Finance of China (MOF) ; Scientific Instrument Developing Project of the Chinese Academy of Sciences |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5478 |
| 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 |
| Corresponding Author | Xu, Qian |
| Affiliation | 1.Chinese Acad Sci, XinJiang Astron Observ, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 3.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 4.Xidian Univ, Key Lab Elect Equipment Struct Design, Minist Educ, Xian 710071, Peoples R China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Xu, Qian,Bao, Hong. An Online Measurement and Calibration Method for a Radio Telescope Sub-Reflector Support Structure Using Fiber Bragg Grating[J]. MICROMACHINES,2023,14(5):1093. |
| APA | Xu, Qian,&Bao, Hong.(2023).An Online Measurement and Calibration Method for a Radio Telescope Sub-Reflector Support Structure Using Fiber Bragg Grating.MICROMACHINES,14(5),1093. |
| MLA | Xu, Qian,et al."An Online Measurement and Calibration Method for a Radio Telescope Sub-Reflector Support Structure Using Fiber Bragg Grating".MICROMACHINES 14.5(2023):1093. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Xu-2023-An Online Me（3417KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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