Suppressions of vibration in the Tip-Tilt mirror control system by add-on controller

doi:10.1016/j.isatra.2020.02.032

CORC > 光电技术研究所 > 中国科学院光电技术研究所 > 光电工程总体研究室（一室）

	Suppressions of vibration in the Tip-Tilt mirror control system by add-on controller
	Tang, T.1,3; Niu, S. xu 1,2,3; Yang, T.1,3; Qi, B.1,3
刊名	ISA Transactions
	2020-07-01
卷号	102 页码:245-250
关键词	Tip-Tilt mirror Sensitivity function High-frequency vibrations Add-on controller Q-filter
ISSN号	0019-0578
DOI	10.1016/j.isatra.2020.02.032
文献子类	期刊论文
英文摘要	Tip-Tilt mirrors play an important role in astronomical telescopes requiring the tracking performance at the level of microradian or sub-microradian. However, the closed-loop performance suffers a lot from the low-sample rate and time delay of image sensors. Especially, this issue is under the condition of vibrations, because dynamic behaviors are complex and the models are difficult to be obtained accurately. Another challenging issue comes from the measurement of vibrations and its extraction for the closed-loop control. This paper proposes a new method based on an add-on controller of the Tip-Tilt mirror to mitigate telescope vibrations. The proposed method only uses Tip-Tilt errors from an image sensor to implement a disturbance observer, which is not being restricted by an accurate model. As a result, the closed-loop performance can be optimized by designing of a proper Q-filter. To suppress the low-frequency and high-frequency vibrations, a novel Q-filter combining a lowpass filter and a bandpass filter is proposed here. The improved control method is validated by both simulation and experiment in the tip-tilt mirror control system under the condition of vibrations. © 2020 ISA
出版地	NEW YORK
WOS关键词	DISTURBANCE REJECTION CONTROL ; OBSERVER-BASED CONTROL ; COMPENSATION
WOS研究方向	Automation & Control Systems ; Engineering ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000540721100020
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/10071]
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 Science, Chengdu; 610209, China; 2.University of Chinese Academy of Sciences, Beijing; 100039, China 3.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China;
推荐引用方式 GB/T 7714	Tang, T.,Niu, S. xu,Yang, T.,et al. Suppressions of vibration in the Tip-Tilt mirror control system by add-on controller[J]. ISA Transactions,2020,102:245-250.
APA	Tang, T.,Niu, S. xu,Yang, T.,&Qi, B..(2020).Suppressions of vibration in the Tip-Tilt mirror control system by add-on controller.ISA Transactions,102,245-250.
MLA	Tang, T.,et al."Suppressions of vibration in the Tip-Tilt mirror control system by add-on controller".ISA Transactions 102(2020):245-250.