Model identification for K mirror turntable of 2 m telescope

doi:10.3788/IRLA201847.0318001

CIOMP OpenIR

	Model identification for K mirror turntable of 2 m telescope
	Xia, Peipei; Deng, Yongting; Wang, Zhiqian; Li, Hongwen; Wang, Xianjun
	2018
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	47 期号:3
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.
关键词	Parameter estimation Frequency response Identification (control systems) Mirrors Singular value decomposition State space methods Telescopes
DOI	10.3788/IRLA201847.0318001
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	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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