Design and analysis of a truss deployable antenna mechanism based on a 3UU-3URU unit  

作　　者：Yundou XU Jinwei GUO Luyao GUO Wenlan LIU Jiantao YAO Yongsheng ZHAO 

机构地区：[1]Parallel Robot and Mechatronic System Laboratory of Hebei Province,Yanshan University,Qinhuangdao 066004,China [2]Key Laboratory of Advanced Forging&Stamping Technology and Science of Ministry of National Education,Yanshan University,Qinhuangdao 066004,China [3]College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China

出　　处：《Chinese Journal of Aeronautics》2019年第12期2743-2754,共12页中国航空学报（英文版）

基　　金：co-supported by the National Natural Science Foundation of China (No. 51675458);the Key Project of Natural Science Foundation of Hebei Province of China (No. E2017203335);the Youth Top Talent Project of Hebei Province Higher Education of China (No. BJ2017060)

摘　　要：Space deployable structures with large calibers, high accuracy, and large folding ratios are indispensable equipment in the aerospace field. Given that the single-DOF 3 RR-3 RRR deployable unit cannot be fully folded, this study proposes a 3 UU-3 URU deployable unit with two kinds of DOF: folding movement and orientation adjustment. First, based on the G-K formula, the DOF of the 3 UU-3 URU unit is analyzed. Then, the 3 UU-3 URU unit is used to construct a deployable truss antenna with a curved surface, and the DOF of the whole deployable antenna containing multiple 3 UU-3 URU units is calculated. The structural design of a deployable antenna with two loops is carried out with specific parameters and geometric relations. Next, a DOF simulation of a basic combination unit composed of three 3 UU-3 URU units is performed. Finally, a prototype of the basic combination unit is manufactured, and the DOF of the mechanism is experimentally verified.Space deployable structures with large calibers, high accuracy, and large folding ratios are indispensable equipment in the aerospace field. Given that the single-DOF 3 RR-3 RRR deployable unit cannot be fully folded, this study proposes a 3 UU-3 URU deployable unit with two kinds of DOF: folding movement and orientation adjustment. First, based on the G-K formula, the DOF of the 3 UU-3 URU unit is analyzed. Then, the 3 UU-3 URU unit is used to construct a deployable truss antenna with a curved surface, and the DOF of the whole deployable antenna containing multiple 3 UU-3 URU units is calculated. The structural design of a deployable antenna with two loops is carried out with specific parameters and geometric relations. Next, a DOF simulation of a basic combination unit composed of three 3 UU-3 URU units is performed. Finally, a prototype of the basic combination unit is manufactured, and the DOF of the mechanism is experimentally verified.

关 键 词：Basic combination unit Degree of freedom(DOF) Deployable truss antenna Simulation analysis Structural design 

分 类 号：V443[航空宇航科学与技术—飞行器设计]