Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Third mirror Stewart platform of TMT based on mechanism condition number | |
Zhang J.-X.; An Q.-C.; Li J.-F.; Yang F. | |
2014 | |
发表期刊 | Guangxue Jingmi Gongcheng/Optics and Precision Engineering |
ISSN | ISBN/1004924X |
卷号 | 22期号:4页码:890-896 |
摘要 | The rotation accuracy of large Stewart platform of a three mirror system in a 30 m telescopy was explored based on the error transfer. Firstly, the singular value method was used to analyze the Stewart platform velocity Jacob matrix, and to obtain the relationship between mechanism condition number and leg elongation. Then, using condition number and system error transfer function , the relationship between the leg elongation error and the platform attitude error was discussed in TMT special kinematical forms, and a group of optimal solution was given out by the MATLAB optimization. After using the ADAMS to validate the theoretical derivation, the known error transfer model combined with precision experiment was used to identify the leg elongation error for evenly distribution and the mobile platform rotation error for bimodal distribution . The MATLAB simulation indicates when the leg elongation error is distributed from 0 to 1 evenly, the expectation of mobile platform rotation error vector norm has reduced from 5.345 410-4to 4.272 110-4 with optimizing quantity by 20%. It concludes that the error distributions of the two shoulder peaks are close to each other and move to 0 point integratively. |
收录类别 | EI |
语种 | 中文 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/44472 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | Zhang J.-X.,An Q.-C.,Li J.-F.,et al. Third mirror Stewart platform of TMT based on mechanism condition number[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2014,22(4):890-896. |
APA | Zhang J.-X.,An Q.-C.,Li J.-F.,&Yang F..(2014).Third mirror Stewart platform of TMT based on mechanism condition number.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,22(4),890-896. |
MLA | Zhang J.-X.,et al."Third mirror Stewart platform of TMT based on mechanism condition number".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 22.4(2014):890-896. |
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文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
基于机构条件数的30m望远镜三镜Stew(1516KB) | 开放获取 | CC BY-ND | 浏览 下载 |
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