可展收抛物柱面天线机构的设计及分析  

Structural Design and Analysis of a Deployable Parabolic-cylinder Antenna

作　　者：秦波 吕胜男[1] 刘全 丁希仑[1] QIN Bo;Lü Shengnan;LIU Quan;DING Xilun(School of Mechanical Engineering and Automation,Beihang University,Beijing 100191)

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《机械工程学报》2020年第5期100-107,共8页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51635002,51605011);中央高校基本科研业务费专项资金(KG12112201);机器人技术与系统国家重点实验室开放研究资助项目。

摘　　要：可展收抛物柱面天线可用于卫星系统中,实现无线通信、深空探测以及空间目标搜索等功能。近年来随着航天事业的迅猛发展,对空间可展天线的成形精度要求越来越高。提出并设计了一种可展收抛物柱面天线机构,该机构主要由网面支撑机构、柔索、金属丝网、轴向驱动与锁定装置、径向驱动与定位锁定装置组成。其中,网面支撑机构包括径向和轴向展收机构。研究中提出了一种新型平面可展收机构作为径向展收机构的组成单元实现天线的径向展开收拢。对可展收机构的等效机构进行了优化设计。利用剪式单元可展机构实现了轴向展收机构的设计。完成了可展收抛物柱面天线机构的驱动组件设计,在Solidworks中完成建模,对天线机构进行了运动学仿真。A deployable parabolic-cylinder antenna can be used in satellite systems to realize functions such as wireless communication, deep space exploration, and space target search. In recent years, with the rapid development of the aerospace industry, the requirements of surface accuracy for space antennas are getting higher and higher. A deployable mesh parabolic cylindrical antenna mechanism is proposed and designed. The mechanism consists of a mesh support mechanism, a cable, a wire mesh, an axial drive and locking device, a radial drive and a positioning and locking device. The mesh support mechanism is constructed by linking radial and axial deployable mechanisms. In the research, a novel type of planar deployable mechanism is proposed as the component of the radial deployable mechanism to realize the radial expansion. The equivalent mechanism of the expandable mechanism is optimized. The design of the axial display mechanism is realized by linking the scissor linkages. The drive component design of the deployable mesh parabolic cylindrical antenna is performed. The CAD model of the proposed mechanism is built in Solidworks, and the model of the support mechanism is kinematically simulated.

关 键 词：可展天线机构 构型设计 摇杆滑块机构 运动学分析 抛物柱面 

分 类 号：TN823[电子电信—信息与通信工程]