Mechanism design and dynamic analysis of large-scale two-dimensional deployable planar antenna

Chuang SHI; Ming-li LIU; Hong-wei GUO; Rong-qiang LIU; Xiao-fei MA

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Mechanism design and dynamic analysis of large-scale two-dimensional deployable planar antenna

更新时间：2021-11-29

- Mechanism design and dynamic analysis of large-scale two-dimensional deployable planar antenna
- Optics and Precision Engineering Pages: 1-9(2021)
- 作者机构：
  
  1.哈尔滨工业大学机器人技术与系统国家重点实验室，黑龙江哈尔滨 150001
  2.西安空间无线电技术研究所，陕西西安 710100
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP394.1;TH691.9
- Received：28 June 2021，
  
  Revised：13 July 2021，
- 稿件说明：
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史创,刘名利,郭宏伟等.大型二维多折展开平面天线机构设计及动力学特性分析[J].光学精密工程,

SHI Chuang,LIU Ming-li,GUO Hong-wei,et al.Mechanism design and dynamic analysis of large-scale two-dimensional deployable planar antenna[J].Optics and Precision Engineering,
史创,刘名利,郭宏伟等.大型二维多折展开平面天线机构设计及动力学特性分析[J].光学精密工程, DOI：10.37188/OPE.XXXXXXXX.0001

SHI Chuang,LIU Ming-li,GUO Hong-wei,et al.Mechanism design and dynamic analysis of large-scale two-dimensional deployable planar antenna[J].Optics and Precision Engineering, DOI：10.37188/OPE.XXXXXXXX.0001

摘要

随着空间对地观测范围和观测精度的提升，对大型平面可展开天线机构的需求越来越迫切。本文提出了一种全新的空间大型二维多折展开相控阵（SAR）天线机构，对其进行了构型优选、结构设计及动力学特性分析。首先，建立了综合评价指标，优选出综合性能最优的天线整体构型方案。其次，对天线机构各部件进行了详细的结构设计，进行样机的研制与展开原理实验验证。最后，建立了天线机构的有限元模型，通过仿真得出了天线机构展开态前5阶振动频率及其对应的振型，并以系统频率变形比作为优化目标对各杆件截面参数进行优化。本文所设计的二维多折展开平面天线机构折展比达到17.6以上，提高了传统平面天线机构的折叠比，振动基频达到1.333 9 Hz，实现了大型平面天线机构的高刚度支撑，为我国大型平面相控阵天线机构的研制提供了可行方案。

Abstract

With the improvement of the space-to-earth observation range and observation accuracy， the demand for large-scale planar deployable antenna mechanisms is becoming more and more urgent. This paper proposes a new space large-scale two-dimensional multi-folding and unfolding planar antenna mechanism， which has been optimized for configuration， structure design and dynamic characteristics analysis. First， a comprehensive evaluation index is established， and the overall configuration of the antenna with the best comprehensive performance is selected. Secondly， the structure of each part of the antenna mechanism is designed in detail， and the prototype is developed and the experimental verification of the deployment principle is carried out. Finally， the finite element model of the antenna mechanism is established， and the first 5 vibration frequencies of the antenna mechanism in the unfolded state and the corresponding mode shapes are obtained through simulation， and the cross-section parameters of each member are optimized with the system specific frequency as the optimization target. The folding ratio of the two-dimensional multi-folding and unfolding planar antenna mechanism designed in this paper is above 17.6， which greatly improves the folding ratio of the traditional planar antenna mechanism， and the vibration fundamental frequency reaches 1.3339Hz， which realizes the high rigidity support of the large planar antenna mechanism， and provides a feasible scheme for the development of large planar phased array antenna mechanism in China.

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