Robust Self-Calibration of Subreflector Actuators Under Noise and Limited Workspace Conditions
文献类型：期刊论文
| 作者 | Kazezkhan, Guljaina1,2; Wang, Na1,2,4; Xu, Qian1,2,4; Lin, Shangmin3; Wang, Hui1; Xue, Fei1; He, Feilong1; Cao, Xiaoman1 |
| 刊名 | MACHINES
 |
| 出版日期 | 2025-06-03 |
| 卷号 | 13期号:6页码:484 |
| 关键词 | radio telescope
subreflector actuator
kinematic calibration
Levenberg-Marquardt algorithm
Huber loss
|
| DOI | 10.3390/machines13060484 |
| 产权排序 | 1 |
| 英文摘要 | Accurate kinematic calibration of subreflector actuators is essential for pointing precision of large radio telescopes, particularly at high frequencies. Conventional least-squares methods are vulnerable to noise and outliers, and their accuracy may degrade when limited pose diversity leads to poor parameter excitation. To address these challenges, this paper proposes a novel robust self-calibration framework that integrates Huber loss and L2 regularization into the Levenberg-Marquardt (LM) algorithm-yielding a hybrid optimization approach that combines residual robustness, numerical stability, and convergence reliability. A comprehensive simulation study was conducted under varying workspace sizes and sensor noise levels. The proposed method maintained stable performance even under reduced excitation and high-noise conditions, where traditional LM methods typically degrade, confirming its robustness and applicability to realistic calibration scenarios. The framework was further validated using a structured-light 6-DOF pose measurement system, the proposed method achieved over 90% improvement in both position and orientation accuracy compared to the traditional LM approach. These findings confirm the method's effectiveness for high-precision 6-DOF calibration in parallel mechanisms, and its suitability for real-world applications in radio telescope subreflector alignment. |
| WOS关键词 | STEWART PLATFORM ; OPTIMIZATION |
| 资助项目 | Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China[12203095] ; Xinjiang Uygur Autonomous Region Tianshan innovation team[2024D14003] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[PTYQ2022YZZD01] ; [2022D01B220] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001515906100001 |
| 出版者 | MDPI |
| 资助机构 | Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China ; Xinjiang Uygur Autonomous Region Tianshan innovation team ; Scientific Instrument Developing Project of the Chinese Academy of Sciences |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7894]  |
| 专题 | 新疆天文台_射电天文研究室 |
| 通讯作者 | Wang, Na; Xu, Qian |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Key Lab Radio Astron & Technol, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China 4.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kazezkhan, Guljaina,Wang, Na,Xu, Qian,et al. Robust Self-Calibration of Subreflector Actuators Under Noise and Limited Workspace Conditions[J]. MACHINES,2025,13(6):484. |
| APA | Kazezkhan, Guljaina.,Wang, Na.,Xu, Qian.,Lin, Shangmin.,Wang, Hui.,...&Cao, Xiaoman.(2025).Robust Self-Calibration of Subreflector Actuators Under Noise and Limited Workspace Conditions.MACHINES,13(6),484. |
| MLA | Kazezkhan, Guljaina,et al."Robust Self-Calibration of Subreflector Actuators Under Noise and Limited Workspace Conditions".MACHINES 13.6(2025):484. |
入库方式： OAI收割
来源：新疆天文台
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