Subdivision error analysis and compensation for photoelectric angle encoder in a telescope control system
文献类型：期刊论文
| 作者 | Su, Yanrui1,2,3; Wang, Qiang1,2; Yan, Fabao1,2,4; Liu, Xiang1,2; Huang, Yongmei1,2 |
| 刊名 | Mathematical Problems in Engineering
 |
| 出版日期 | 2015 |
| 卷号 | 2015页码:967034 |
| ISSN号 | 1024-123X |
| 通讯作者 | Huang, Yongmei |
| 中文摘要 | As the position sensor, photoelectric angle encoder affects the accuracy and stability of telescope control system (TCS). A TCS-based subdivision error compensation method for encoder is proposed. Six types of subdivision error sources are extracted through mathematical expressions of subdivision signals first. Then the period length relationships between subdivision signals and subdivision errors are deduced. And the error compensation algorithm only utilizing the shaft position of TCS is put forward, along with two control models; Model I is that the algorithm applies only to the speed loop of TCS and Model II is applied to both speed loop and position loop. Combined with actual project, elevation jittering phenomenon of the telescope is discussed to decide the necessity of DC-type subdivision error compensation. Low-speed elevation performance before and after error compensation is compared to help decide that Model II is preferred. In contrast to original performance, the maximum position error of the elevation with DC subdivision error compensation is reduced by approximately 47.9% from 1.42″ to 0.74″. The elevation gets a huge decrease in jitters. This method can compensate the encoder subdivision errors effectively and improve the stability of TCS. © 2015 Yanrui Su et al. |
| 英文摘要 | As the position sensor, photoelectric angle encoder affects the accuracy and stability of telescope control system (TCS). A TCS-based subdivision error compensation method for encoder is proposed. Six types of subdivision error sources are extracted through mathematical expressions of subdivision signals first. Then the period length relationships between subdivision signals and subdivision errors are deduced. And the error compensation algorithm only utilizing the shaft position of TCS is put forward, along with two control models; Model I is that the algorithm applies only to the speed loop of TCS and Model II is applied to both speed loop and position loop. Combined with actual project, elevation jittering phenomenon of the telescope is discussed to decide the necessity of DC-type subdivision error compensation. Low-speed elevation performance before and after error compensation is compared to help decide that Model II is preferred. In contrast to original performance, the maximum position error of the elevation with DC subdivision error compensation is reduced by approximately 47.9% from 1.42″ to 0.74″. The elevation gets a huge decrease in jitters. This method can compensate the encoder subdivision errors effectively and improve the stability of TCS. © 2015 Yanrui Su et al. |
| 学科主题 | Control systems - Error analysis - Errors - Photoelectricity - Telescopes - Traction control |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000359271900001 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/4169]  |
| 专题 | 光电技术研究所_光电工程总体研究室（一室） |
| 作者单位 | 1.Institute of Optics and Electronics, Chinese Academy of Sciences, No. 1 Guangdian Road, Chengdu, China 2.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, China 3.University of Chinese Academy of Sciences, Beijing, China 4.School of Geosciences and InfoPhysics, Central South University, Changsha, China |
| 推荐引用方式 GB/T 7714 | Su, Yanrui,Wang, Qiang,Yan, Fabao,et al. Subdivision error analysis and compensation for photoelectric angle encoder in a telescope control system[J]. Mathematical Problems in Engineering,2015,2015:967034. |
| APA | Su, Yanrui,Wang, Qiang,Yan, Fabao,Liu, Xiang,&Huang, Yongmei.(2015).Subdivision error analysis and compensation for photoelectric angle encoder in a telescope control system.Mathematical Problems in Engineering,2015,967034. |
| MLA | Su, Yanrui,et al."Subdivision error analysis and compensation for photoelectric angle encoder in a telescope control system".Mathematical Problems in Engineering 2015(2015):967034. |
入库方式： OAI收割
来源：光电技术研究所
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