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Department光电工程总体研究室(一室)
Youla-Kucera Parameterization-Based Optimally Closed-Loop Control for Tip-Tilt Compensation
Tang, Tao1,2; Qi, Bo1,2; Yang, Tao1,2
Source PublicationIEEE SENSORS JOURNAL
Volume18Issue:15Pages:6154-6160
2018-08-01
Language英语
ISSN1530-437X
DOI10.1109/JSEN.2018.2846817
Indexed BySCI ; Ei
WOS IDWOS:000438730200014
EI Accession Number20182505346483
SubtypeJ
AbstractIn this paper, we develop a new method based on Youla-Kucera parameterization in frequency domain to reduce tip and tilt vibrations of astronomical telescopes. This proposed method can be implemented in real time and can also achieve optimal correction when frequencies of vibrations are provided. Based on this parameterization, the closed-loop stability is easily assured, which can relax the stability condition to design control parameters. Due to being plugged into an existing feedback control loop, the sensitivity function of the tip-tilt mirror control system can be minimized by optimizing Q-filter for adapting the changes of vibrations. Two types of Q-filter are introduced to deal with low-frequency and large-magnitude narrowband vibrations. Because of not being restricted by an accurate model of tip-tilt mirror, this improved control mode cannot lead to a compromise between vibrations rejection and noise propagation in the control loop. Although on-line identification of disturbances models is not required, finding the vibration frequencies is crucial. Simulations and experiments demonstrate that the Youla-Kucera controller has a clear improvement of the closed-loop performance in comparison with the original method.
KeywordVibration control tip-tilt mirror telescope Youla-Kucera parameterization Q-filter
WOS KeywordADAPTIVE OPTICS ; DISTURBANCE OBSERVER ; LARGE TELESCOPES ; LQG CONTROL ; VIBRATION ; SYSTEMS ; IDENTIFICATION ; MITIGATION ; VALIDATION ; DESIGN
EI KeywordsBandwidth ; Control system analysis ; Control system stability ; Control systems ; Frequency domain analysis ; Mirrors ; Parameterization ; Sensors ; Telescopes ; Vibration analysis ; Vibration control
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9287
Collection光电工程总体研究室(一室)
Affiliation1.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China;
2.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China
Recommended Citation
GB/T 7714
Tang, Tao,Qi, Bo,Yang, Tao. Youla-Kucera Parameterization-Based Optimally Closed-Loop Control for Tip-Tilt Compensation[J]. IEEE SENSORS JOURNAL,2018,18(15):6154-6160.
APA Tang, Tao,Qi, Bo,&Yang, Tao.(2018).Youla-Kucera Parameterization-Based Optimally Closed-Loop Control for Tip-Tilt Compensation.IEEE SENSORS JOURNAL,18(15),6154-6160.
MLA Tang, Tao,et al."Youla-Kucera Parameterization-Based Optimally Closed-Loop Control for Tip-Tilt Compensation".IEEE SENSORS JOURNAL 18.15(2018):6154-6160.
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