Novel Surface Design of Deployable Reflector Antenna Based on Polar Scissor Structures

Chinese Journal of Mechanical Engineering

Yangmin Li¹  Chenchen Wu²  Keli Chen²  Jinguo Liu³  Pengyuan Zhao⁴ 

[1] Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, 999077, Hong Kong, China;State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Science, 110016, Shenyang, China;State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Science, 110016, Shenyang, China;Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, 110169, Shenyang, China;State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Science, 110016, Shenyang, China;Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, 110169, Shenyang, China;University of Chinese Academy of Sciences, 100049, Beijing, China;

关键词: Deployable structures;    Polar scissor unit;    Reflector antenna;    Surface design;   

DOI  :  10.1186/s10033-020-00488-6

来源: Springer

【 摘 要 】

Space-deployable mechanisms can be used as supporting structures for large-diameter antennas in space engineering. This study proposes a novel method for constructing the surface design of space reflector antennas based on polar scissor units. The concurrency and deployability equations of the space scissor unit with definite surface constraints are derived using the rod and vector methods. Constraint equations of the spatial transformation for space n-edge polar scissor units are summarized. A new closed-loop deployable structure, called the polar scissor deployable antenna (PSDA), is designed by combining planar polar scissor units with spatial polar scissor units. The over-constrained problem is solved by releasing the curve constraint that locates at the end-point of the planar scissor mechanism. Kinematics simulation and error analysis are performed. The results show that the PSDA can effectively fit the paraboloid of revolution. Finally, deployment experiments verify the validity and feasibility of the proposed design method, which provides a new idea for the construction of large space-reflector antennas.

【 授权许可】

CC BY