Wideband Vibrations Rejection of Tip-Tilt Mirror Using Error-Based Disturbance Observer

doi:10.1109/ACCESS.2019.2962808

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	Wideband Vibrations Rejection of Tip-Tilt Mirror Using Error-Based Disturbance Observer
	Niu, Shuaixu 1,2,3; Yang, Tao 2,3; Tang, Tao 2,3; Xu, Tianrong 1,2,3; Ruan, Yong 1,2,3; Bao, Qiliang 2,3
刊名	IEEE Access
	2020-07-12
卷号	8 页码:5131-5138
关键词	Error-based disturbance observer wideband vibration rejection optical telescopes Youla parameterization tip-tilt mirror
ISSN号	2169-3536
DOI	10.1109/ACCESS.2019.2962808
文献子类	期刊论文
英文摘要	Vibration rejection is a key technology of practical engineering, especially in optical telescopes with a stable accuracy of urad level. The closed-loop performance of optical telescopes is largely determined by the control bandwidth, while it is severely limited by the low sampling rate and large time delay of the image sensor, so it is difficult to mitigate structural vibrations in optical telescopes, especially wideband vibrations, because they exist universally and greatly influence the stability of the system. This paper develops an improved error-based disturbance observer (EDOB) based on the Youla parameterization approach to mitigate wideband vibrations in optical telescopes. This novel method can greatly improve the vibration rejection ability of the system by designing a proper Q-filter to accommodate wideband vibrations when their frequencies can be acquired. Because wideband vibrations in optical telescopes can be considered as multiple narrow-band vibrations with similar central frequencies, a novel Q-filter instead of a single wideband notch filter is proposed to mitigate wideband vibrations when considering the stability and closed-loop performance of the system. Moreover, this method only relies on a low frequency model, leading to a reduction in model dependence. Both the simulations and experimental results show that the error-based disturbance observer based on Youla parameterization can greatly improve the closed-loop performance of the system compared with the traditional feedback control loop. © 2013 IEEE.
出版地	PISCATAWAY
WOS关键词	ADAPTIVE OPTICS ; RECONSTRUCTION ; MITIGATION ; DESIGN
WOS研究方向	Computer Science ; Engineering ; Telecommunications
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000549787600007
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/10057]
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.College of Computer Science and Technology, University of Chinese Academy of Sciences, Beijing; 100039, China 2.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China; 3.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China;
推荐引用方式 GB/T 7714	Niu, Shuaixu,Yang, Tao,Tang, Tao,et al. Wideband Vibrations Rejection of Tip-Tilt Mirror Using Error-Based Disturbance Observer[J]. IEEE Access,2020,8:5131-5138.
APA	Niu, Shuaixu,Yang, Tao,Tang, Tao,Xu, Tianrong,Ruan, Yong,&Bao, Qiliang.(2020).Wideband Vibrations Rejection of Tip-Tilt Mirror Using Error-Based Disturbance Observer.IEEE Access,8,5131-5138.
MLA	Niu, Shuaixu,et al."Wideband Vibrations Rejection of Tip-Tilt Mirror Using Error-Based Disturbance Observer".IEEE Access 8(2020):5131-5138.