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Error-based plug-in controller of tip-tilt mirror to reject telescope's structural vibrations
Tang, Tao1,2; Yang, Tao1,2; Qi, Bo1,2; Cao, Lei1,2; Ren, Ge1,2; Hu, Hongyi1,2
Corresponding AuthorTang, Tao(prettang@gmail.com)
2018-10-01
Source PublicationJOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
ISSN2329-4124
Volume4Issue:4Pages:7
AbstractStructural vibrations usually feature tip-tilt modes and affect the closed-loop performance of the tip-tilt mirror control system in astronomical telescopes. Long integration time of the image sensor always restricts the closed-loop control bandwidth, resulting in difficulties in rejecting structural vibrations. An error-based plug-in controller to mitigate multimodal structural vibrations is proposed. Only position error is used in this proposed controller, which can be plugged into existing feedback loops to create high gain at the frequencies of multimodal disturbances, and thereby the closed-loop performance can be optimized by designing an appropriate Q-filter. When the centered frequencies of energetic disturbances are determined, a band-pass filter is suggested to mitigate multimodal vibrations. This improved band-pass filter can avoid big amplifications at other frequencies. Due to not being restricted by an accurate model, the plug-in controller does not lead to a compromise between vibration rejection and control stability. Both simulation and experiment validate the effectiveness of the proposed method in the tip-tilt mirror control system under the condition of vibrations. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Keywordastronomical telescope band-pass filter error-based plug-in controller multimodal vibrations tip-tilt mirror
DOI10.1117/1.JATIS.4.4.049004
Indexed BySCI
WOS KeywordADAPTIVE OPTICS ; LQG CONTROL ; COMPENSATION ; CHALLENGES ; MITIGATION ; VALIDATION ; DESIGN
Language英语
WOS Research AreaEngineering ; Instruments & Instrumentation ; Optics
WOS SubjectEngineering, Aerospace ; Instruments & Instrumentation ; Optics
WOS IDWOS:000451424700016
PublisherSPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24554
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorTang, Tao
Affiliation1.Chinese Acad Sci, Inst Opt & Elect, Chengdu, Sichuan, Peoples R China
2.Chinese Acad Sci, Key Lab Opt Engn, Chengdu, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Tang, Tao,Yang, Tao,Qi, Bo,et al. Error-based plug-in controller of tip-tilt mirror to reject telescope's structural vibrations[J]. JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS,2018,4(4):7.
APA Tang, Tao,Yang, Tao,Qi, Bo,Cao, Lei,Ren, Ge,&Hu, Hongyi.(2018).Error-based plug-in controller of tip-tilt mirror to reject telescope's structural vibrations.JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS,4(4),7.
MLA Tang, Tao,et al."Error-based plug-in controller of tip-tilt mirror to reject telescope's structural vibrations".JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS 4.4(2018):7.
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