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Beam pointing analysis and a novel coarse pointing assembly design in space laser communication
Zhang, Fu rui1,2; Han, Jun-feng1; Ruan, Ping1
作者部门光电跟踪与测量技术研究室
2019-07
发表期刊Optik
ISSN00304026
卷号189页码:130-147
产权排序1
摘要

Nowadays, Small satellites take with high precision and lightweight laser communication terminals become a hot research direction. In this work, factors affecting beam pointing performance have been studied and a novel coarse pointing assembly (CPA) is designed based on flexure technology. The beam pointing performance is influenced by three aspects: Rayleigh distribution pointing error composed of static bias error and dynamic jitter, coupled motion between optical terminal and satellite and point ahead angle. Based on beam pointing requirements, a novel 2-D spatial flexure parallel coarse pointing assembly is proposed. Firstly, the type synthesis of this mechanism is performed and the freedom is verified by screw method. Then the detailed structural design is given. The pivotal component-elliptic arc flexure hinge is optimized by genetic algorithm and its rotation accuracy is less than 10 um. A flexure rod is used in actuating legs which is made rigid by spatial pseudo-rigid body method in kinematic analysis process. Finally, both of forward kinematics and inverse kinematics have been mathematically analyzed and the virtual prototype simulation is performed in Adams. The rotational accuracy can reach to 3 μrad. The position, velocity and acceleration motion curves shown that the platform moves stable which means it's easy to control. This work provides a new idea for future design of space optical communication terminal. © 2019 Elsevier GmbH

关键词Space laser communication Coarse pointing assembly Flexible mechanism Beam pointing Kinematic analysis
DOI10.1016/j.ijleo.2019.05.079
收录类别SCI ; EI
语种英语
WOS记录号WOS:000481976900017
出版者Elsevier GmbH
EI入藏号20192206993443
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/31531
专题光电跟踪与测量技术研究室
通讯作者Zhang, Fu rui
作者单位1.Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
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Zhang, Fu rui,Han, Jun-feng,Ruan, Ping. Beam pointing analysis and a novel coarse pointing assembly design in space laser communication[J]. Optik,2019,189:130-147.
APA Zhang, Fu rui,Han, Jun-feng,&Ruan, Ping.(2019).Beam pointing analysis and a novel coarse pointing assembly design in space laser communication.Optik,189,130-147.
MLA Zhang, Fu rui,et al."Beam pointing analysis and a novel coarse pointing assembly design in space laser communication".Optik 189(2019):130-147.
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