Deployment Dynamic Modeling and Driving Schemes for a Ring-Truss Deployable Antenna  

作　　者：Baiyan He Lijun Jia Kangkang Li Rui Nie Yesen Fan Guobiao Wang 

机构地区：[1]Key Laboratory of Mechanism Theory and Equipment Design,Ministry of Education,Tianjin University,Tianjin 300350,China [2]Xi’an Institute of Space Radio Technology,Xi’an 710000,China [3]International Institute for Innovative Design and Intelligent Manufacturing of Tianjin University in Zhejiang,Shaoxing 312077,China

出　　处：《Chinese Journal of Mechanical Engineering》2024年第4期163-182,共20页中国机械工程学报（英文版）

基　　金：Supported by National Key R&D Program of China (Grant No.2023YFB3407103);National Natural Science Foundation of China (Grant Nos.52175242,52175027);Young Elite Scientists Sponsorship Program by CAST (Grant No.2022QNRC001)。

摘　　要：Mesh reflector antennas are widely used in space tasks owing to their light weight,high surface accuracy,and large folding ratio.They are stowed during launch and then fully deployed in orbit to form a mesh reflector that transmits signals.Smooth deployment is essential for duty services;therefore,accurate and efficient dynamic modeling and analysis of the deployment process are essential.One major challenge is depicting time-varying resistance of the cable network and capturing the cable-truss coupling behavior during the deployment process.This paper proposes a general dynamic analysis methodology for cable-truss coupling.Considering the topological diversity and geometric nonlinearity,the cable network's equilibrium equation is derived,and an explicit expression of the time-varying tension of the boundary cables,which provides the main resistance in truss deployment,is obtained.The deployment dynamic model is established,which considers the coupling effect between the soft cables and deployable truss.The effects of the antenna's driving modes and parameters on the dynamic deployment performance were investigated.A scaled prototype was manufactured,and the deployment experiment was conducted to verify the accuracy of the proposed modeling method.The proposed methodology is suitable for general cable antennas with arbitrary topologies and parameters,providing theoretical guidance for the dynamic performance evaluation of antenna driving schemes.

关 键 词：Cable antenna Deployment dynamics Performance evaluation Driving scheme Deployable structure 

分 类 号：TN820[电子电信—信息与通信工程]