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

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外文摘要：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 trans-mits signals.Smooth deployment is essential for duty services;therefore,accurate and efficient dynamic mod-eling and analysis of the deployment process are essential.One major challenge is depicting time-varying resist-ance 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 expres-sion 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 con-ducted 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 perfor-mance evaluation of antenna driving schemes.

外文关键词：

Cable antennaDeployment dynamicsPerformance evaluationDriving schemeDeployable structure

作者：

Baiyan He、Lijun Jia、Kangkang Li、Rui Nie、Yesen Fan、Guobiao Wang

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作者单位：

Key Laboratory of Mechanism Theory and Equipment Design,Ministry of Education,Tianjin University,Tianjin 300350,China

Xi'an Institute of Space Radio Technology,Xi'an 710000,China

International Institute for Innovative Design and Intelligent Manufacturing of Tianjin University in Zhejiang,Shaoxing 312077,China

基金：

National Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYoung Elite Scientists Sponsorship Program by CAST

项目编号：

2023YFB340710352175242521750272022QNRC001

出版年：

2024

DOI：

10.1186/s10033-024-01065-x

中国机械工程学报

中国机械工程学会

中国机械工程学报

CSTPCD

影响因子：0.765

ISSN：1000-9345

年,卷(期)：2024.37(4)