Model identification for K mirror turntable of 2 m telescope
文献类型：期刊论文
| 作者 | Xia, Peipei; Deng, Yongting; Wang, Zhiqian; Li, Hongwen; Wang, Xianjun |
| 刊名 | Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
 |
| 出版日期 | 2018 |
| 卷号 | 47期号:3 |
| 关键词 | Parameter estimation Frequency response Identification (control systems) Mirrors Singular value decomposition State space methods Telescopes |
| ISSN号 | 10072276 |
| DOI | 10.3788/IRLA201847.0318001 |
| 英文摘要 | A model identification method based on the singular value decomposition and eigensystem realization algorithm(ERA) using Hankel matrix, was proposed for K mirror turntable of 2 m telescope to identify the model's order and parameters. Firstly, the plant was excited using the sweep signal and the position feedback signal was recorded, the test data were analyzed through the power spectrum density function to get the frequency response function of the system. Secondly, the singular value decomposition (SVD) was adopted to identify the Hankel matrix of the system to acquire the order model of the K mirror turntable. Finally, the ERA was adopted to identify the Hankel matrix to acquire the model parameters of the system. The experiment results show that the minimum order of the K mirror turntable is 6, the magnitude phase measurement accuracies of transfer function are 0.31 dB and 0.87in middle frequency range respectively, compared with the hierarchical identification method, the identification accuracies are improved 50.7% and 23% separately. Results indicate that the proposed method can determinate a balanced and minimal order state-space representation equal to the system's dynamic performance, which is practical and effective in model order determination and parameter estimation. 2018, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/60726]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Xia, Peipei,Deng, Yongting,Wang, Zhiqian,et al. Model identification for K mirror turntable of 2 m telescope[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2018,47(3). |
| APA | Xia, Peipei,Deng, Yongting,Wang, Zhiqian,Li, Hongwen,&Wang, Xianjun.(2018).Model identification for K mirror turntable of 2 m telescope.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,47(3). |
| MLA | Xia, Peipei,et al."Model identification for K mirror turntable of 2 m telescope".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 47.3(2018). |
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