星载薄膜天线人形杆单侧驱动机构设计与实验研究

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (5) : 33-38.

论文

王岩1 ，杨慧1，刘荣强2

作者信息 +

Design and tests of single-sided driving mechanism for TRAC boom of spaceborne thin film antenna

WANG Yan1, YANG Hui1, LIU Rongqiang2

Author information +

文章历史 +

摘要

面向星载大口径薄膜天线在轨展开需求，开展高型面精度、大口径、轻量化和大折展比的空间薄膜天线人形杆折展机构创新设计及其动力学特性研究。首先，提出一种带有径向预紧的人形杆单侧驱动机构，通过一个电机同时驱动滚筒和丝杠运动，当人形杆完全展开时径向预紧机构得到触发，实现人形杆根部的夹紧，从而提高整个薄膜天线展开状态的刚度和型面精度。对该机构缠绕过程的运动学和收拢状态的动力学分别进行仿真，最后，加工出人形杆单侧驱动机构原理样机，对其收拢和展开进行功能性实验，测量在缠绕过程中人形杆的力矩，并对单侧驱动机构收拢状态整体结构进行模态分析。经实验验证缠绕过程中有限元仿真模型力矩的准确性，为空间大型轻质薄膜天线人形杆展开机构的航天工程应用提供理论支撑。

Abstract

For the demand of on-orbit deploying of space-borne large scale membrane antenna, this project researches on high surface accuracy, large-scale, lightweight and large packaging efficiency membrane antenna deploying with the triangular retractable and collapsible (TRAC) boom, and the dynamic and kinematic behaviors are studied. Firstly, the unilateral deployable structure with the TRAC boom and a radial preload mechanism is proposed. One motor drives both the hub and screw. When the TRAC boom is fully deployed, the radial preload mechanism is triggered. Then, the kinematics and dynamics of the structure are simulated, respectively. Lastly, the prototype of the unilateral deployable structure is developed, wrapping and deploying are tested. The moment of the TRAC boom during wrapping process is collected, and the modal analysis of the whole unilateral deployable structure with complete wrapped TRAC boom is carried out. The accuracies of the finite element models and the feasibility of the unilateral deployable structure are verified. The research achievement will provide theoretical support for application of space large and lightweight membrane antenna with the TRAC boom in aerospace engineering.

导出引用

王岩1,杨慧1，刘荣强2. 星载薄膜天线人形杆单侧驱动机构设计与实验研究[J]. 振动与冲击, 2022, 41(5): 33-38

WANG Yan1, YANG Hui1, LIU Rongqiang2. Design and tests of single-sided driving mechanism for TRAC boom of spaceborne thin film antenna[J]. Journal of Vibration and Shock, 2022, 41(5): 33-38

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