Analysis and design of segment control system in segmented primary mirror

	Analysis and design of segment control system in segmented primary mirror
	Yu, Wenhao 1,2,3; Li, Bin 1,2,3; Chen, Mo 1,2,3; Xian, Hao 1,2
	2017
会议名称	Proceedings of SPIE: AOPC 2017: Space Optics and Earth Imaging and Space Navigation
会议录名称	0277-786X
卷号	10463
页码	104631T
摘要	Segmented 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.
关键词	Bandwidth - Bode diagrams - Control systems - Earth (planet) - Mirrors - Telescopes
收录类别	Ei
语种	英语
EI分类号	2017-2158
文献类型	会议论文
条目标识符	http://ir.ioe.ac.cn/handle/181551/9026
专题	自适应光学技术研究室（八室）
作者单位	1.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
推荐引用方式 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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