2.4 m Ku频段球形充气天线结构设计优化  

Structural Design Optimization of a 2.4 m Ku Band Spherical Inflatable Antenna

作　　者：王维虎 张树新[1] 邹君鲁 王哲[1] 陈晓峰 WANG Weihu;ZHANG Shuxin;ZOU Junlu;WANG Zhe;CHEN Xiaofeng(State Key Laboratory of Electromechanical Integrated Manufacturing of High-Performance Electronic Equipment,Xidian University,Xi’an 710071,China;Shanghai Institute of Aerospace System Engineering,Shanghai 201109,China)

机构地区：[1]西安电子科技大学高性能电子装备机电集成制造全国重点实验室,西安710071 [2]上海宇航系统工程研究所,上海201109

出　　处：《航天技术与工程学报》2025年第2期83-88,共6页

基　　金：中国航天科技集团公司第八研究院产学研合作基金资助项目(SAST2022-108);国家自然科学基金优秀青年基金资助项目(52322507)。

摘　　要：为了提高2.4 m Ku频段球形充气天线的面形精度,开展了天线初始形态结构设计优化。通过建立2.4 m球形充气天线有限元模型,采用Zernike多项式及法向误差计算表面误差的方法对反射面形态进行了优化设计,使其在充气后达到预期的抛物面形状,确保了表面误差在0.5 mm以内的要求。仿真结果表明,在400 Pa压差和下半球气压7000 Pa的不同角度工况下,面形精度满足Ku频段表面误差的精度要求。经上述研究,优化设计后的反射面在充气后能够实现较高的面形精度,满足工程应用需求。In order to improve the surface shape accuracy of the 2.4 m Ku band spherical inflatable antenna,the structural design optimization of the initial shape of the antenna is carried out.By establishing a finite element model of the 2.4 m spherical inflatable antenna,the Zernike polynomials and the method of calculating the surface error using normal error are used to optimize the design of the reflecting surface shape,so as to achieve the expected paraboloidal shape after inflation,and to ensure that the surface error is within the requirement of 0.5 mm.The simulation results show that the accuracy of the surface shape meets the accuracy requirement of the surface error in Ku band under different angles conditions of 400 Pa differential pressure and lower hemisphere pressure of 7000 Pa.After the above study,the optimized design of the reflecting surface can achieve high surface accuracy after inflation,which meets the requirements of engineering applications.

关 键 词：球形充气天线 形态优化 面形精度 KU频段 天线设计 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]