基于低热变形的卫星天线拓扑优化设计方法  

Topology Optimization Design of Satellite Antenna Back Reinforcement Based on Low Thermal Deformation

作　　者：种婧宜 裴胜伟[1] 王缅 CHONG Jing-y i;PEI Sheng-wei;WANG Mian(Institute of Telecommunication Satellite,China Academy of Space Technology,Beijing 100094,China)

机构地区：[1]中国空间技术研究院通信卫星事业部

出　　处：《计算机仿真》2019年第6期131-134,共4页Computer Simulation

摘　　要：随着通信卫星工作频段的提高以及多波束天线技术的广泛应用,通信卫星对天线形面精度的要求日益严格。目前一些天线的结构设计主要依赖设计者的经验,采用设计-校核-改进设计-再校核的设计方法,多次迭代得到最终方案。这种传统结构设计方法在初始设计中没有充分考虑天线承受热载荷的能力,后期在热变形校核中一旦出现天线热变形超差等问题则需要重新设计,设计周期较长。为了解决上述问题,利用结构拓扑优化设计方法对卫星天线进行结构优化设计,在概念设计阶段直接以最小热变形为目标,以质量和一阶频率为约束条件对天线结构开展拓扑优化设计,得到满足设计要求的天线背筋布局形式,为低热变形空间天线的结构设计与研制提供新的设计思路和方法,提升天线热变形设计的水平。With the improvement of the working band of communication satellite and the wide application of multi beam antenna technology,the requirement of the accuracy of antenna surface is more and more strict.The structure design of some antennas mainly adopts the design method of design-checking-improved design-re-checking,and many iterations get the final scheme.This traditional design method does not fully consider the ability of antenna to bear thermal load in the initial design.In the later thermal deformation checking,once the antenna thermal de formation is not satisfied,it needs to be redesigned and the design period is long.In order to solve this problem,the topology optimization design method was used to optimize the structure of low thermal deformation antenna in the pa per.In the conceptual design stage,the topology optimization of antenna structure was carried out directly under the condition of minimum thermal deformation and the constraints of mass and first-order frequency.A new design idea and method for the design and development of the low thermal deformation space antenna were provided to improve the design level of the antenna’s thermal deformation.

关 键 词：卫星天线 结构拓扑优化 热变形 

分 类 号：V411.8[航空宇航科学与技术—航空宇航推进理论与工程]