Accuracy synthesis of a multi-level hybrid positioning mechanism for the feed support system in FAST
文献类型：期刊论文
| 作者 | Tang, Xiaoqiang1; Chai, Xiaoming2 ; Tang, Lewei1; Shao, Zhufeng1
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| 刊名 | ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING
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| 出版日期 | 2014-10-01 |
| 卷号 | 30期号:5页码:565-575 |
| 关键词 | Hybrid mechanism Parallel manipulator Time-varying barycenter Accuracy synthesis Radio telescope |
| 英文摘要 | This study examines the terminal accuracy synthesis of a multi-level hybrid positioning mechanism for the feed support system in a Five-hundred-meter Aperture Spherical Radio Telescope (FAST) project, specifically considering three types of error influence factors such as time-varying barycenter, geometric error, and structural deformation. An error model caused by a time-varying barycenter and that for the entire mechanism are first established, and the physical meaning of the latter is further explained. The three factors that influence terminal accuracy are then analyzed. An efficient approach for acquiring the terminal error boundary over the entire workspace is proposed on the basis of the vector set theory and a linear algebra method. After employing an error compensation method for the first-level mechanism through control strategy, terminal accuracy synthesis is conducted by using a nonlinear optimization algorithm. Both constraints for accuracy and weight are satisfied after introducing measurement systems. Moreover, the proposed method of accuracy analysis and synthesis can be applied to other multi-level hybrid mechanisms. (C) 2014 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000337854300016 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6531]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Tsinghua Univ, Dept Mech Engn, State Key Lab Tribol, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Joint Lab Radio Astron Technol, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Xiaoqiang,Chai, Xiaoming,Tang, Lewei,et al. Accuracy synthesis of a multi-level hybrid positioning mechanism for the feed support system in FAST[J]. ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING,2014,30(5):565-575. |
| APA | Tang, Xiaoqiang,Chai, Xiaoming,Tang, Lewei,&Shao, Zhufeng.(2014).Accuracy synthesis of a multi-level hybrid positioning mechanism for the feed support system in FAST.ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING,30(5),565-575. |
| MLA | Tang, Xiaoqiang,et al."Accuracy synthesis of a multi-level hybrid positioning mechanism for the feed support system in FAST".ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING 30.5(2014):565-575. |
入库方式： OAI收割
来源：国家天文台
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