摘要
针对平面薄膜相控阵天线受器件热以及边界索张力不确定的影响,提出一种平面薄膜相控阵天线边界形状优化方法。首先,考虑到天线单元的热效应,建立了平面薄膜天线热-结构有限元分析模型。其次,在确定范围内的任意索张力组合下,将薄膜边界形状视为3次B样条曲线,以曲线控制点位移为设计变量建立平面薄膜天线优化模型,通过优化实际结构索膜应力与参考应力偏差,实现对薄膜边界形状的优化。最后,通过数值模拟验证了该方法的有效性。与目前薄膜天线边界形状相比,该方法可实现任意曲线形状优化。
The planar membrane phased array antenna is adversely affected by the heat of various device and the uncertain cable tension.A boundary shape optimization method for the planar mem-brane phased array antenna was proposed in this paper.First,considering the thermal effect of the antenna element,the thermo-mechanical Finite Element Analysis model of the planar membrane an-tenna was established.Then based on the cable tension uncertainty,and taking the membrane boundary as a cubic B-spline curve,the optimization model was established with the control point displacement as the design variable.By optimizing the deviation of the actual structural stress and the reference stress,the suitable membrane boundary shape was obtained.In the end,the validity of the proposed method was verified by numerical simulation.Compared with the current membrane boundary shape optimization,the proposed method can achieve any arbitrary curve optimization.
作者
贺群
保宏
杜敬利
彭福军
HE Qun;BAO Hong;DU Jingli;PENG Fujun(Key Laboratory of Electronic Equipment Structure Design, Ministry of Education, Xidian University Xi’an 710071, China;Aerospace Systems Engineering Shanghai, Shanghai 201108, China)
出处
《载人航天》
CSCD
2017年第4期454-461,共8页
Manned Spaceflight
基金
国家自然基金重大计划(51490660)
国家自然科学基金(51675398)
上海航天科技创新基金(SAST201413)
关键词
平面薄膜天线
器件热
索张力组合
边界形状优化
planar membrane antenna
device heat
cable tension combination
boundary shape optimization
作者简介
贺群，女，硕士研究生，研究方向为结构与控制的一体化设计。E-mail:hq_hcw@163.com;通讯作者:保宏，男，博士，研究方向为电子装备结构设计与精密控制。E-mail:hbao@xidian.edu.cn
