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Analysis and design of segment control system in segmented primary mirror
Yu, Wenhao1,2,3; Li, Bin1,2,3; Chen, Mo1,2,3; Xian, Hao1,2
Source Publication0277-786X
Volume10463
Pages104631T
2017
Language英语
Indexed ByEi
AbstractSegmented primary mirror will be adopted widely in giant telescopes in future, such as TMT, E-ELT and GMT. High-performance control technology of the segmented primary mirror is one of the difficult technologies for telescopes using segmented primary mirror. The control of each segment is the basis of control system in segmented mirror. Correcting the tilt and tip of single segment is the main work of this paper which is divided into two parts. Firstly, harmonic response done in finite element model of single segment matches the Bode diagram of a two-order system whose natural frequency is 45 hertz and damping ratio is 0.005. Secondly, a control system model is established, and speed feedback is introduced in control loop to suppress resonance point gain and increase the open-loop bandwidth, up to 30Hz or even higher. Corresponding controller is designed based on the control system model described above. © 2017 SPIE.
KeywordBandwidth - Bode diagrams - Control systems - Earth (planet) - Mirrors - Telescopes
Conference NameProceedings of SPIE: AOPC 2017: Space Optics and Earth Imaging and Space Navigation
EI Classification Number2017-2158
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9026
Collection自适应光学技术研究室(八室)
Affiliation1.Key Laboratory of Adaptive Optics, Chinese Academy of Sciences, Chengdu; 610209, China;
2.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China;
3.University of Chinese, Academy of Sciences, Beijing; 100039, China
Recommended Citation
GB/T 7714
Yu, Wenhao,Li, Bin,Chen, Mo,et al. Analysis and design of segment control system in segmented primary mirror[C],2017:104631T.
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