大型相控阵天线结构保型设计研究

On homology the design of large phased array antenna structure

针对某大型相控阵天线自重大、表面精度要求高、加强筋安装位置受限的特点,本文进行相控阵天线阵面保型的结构方案设计。考虑到加强筋安装位置和型材受限,提出了连续化过滤函数,使得型材变量与连续变量进行映射,将离散变量拓朴优化转换为连续变量拓朴优化求解,提高了求解效率,降低了求解的规模。同时,为降低支腿驱动力,以调整机构条件数为目标进行铰节点的布局优化,并进行了静、动力的计算,确定了支腿最大驱动力。对某大型相控阵雷达进行了案例验证,收到满意的结果,并且该方案将应用到工程实际中。

Considering the special characteristics of a large phased antenna with great in weight,high precision in antenna surface, and ribbed stiffener restricted in location, homology design of antenna structure is studied in this paper. A discrete variables topology optimization method is presented for solving these problems above. For improving effective and decreasing cost in computing,a continuous filter function is proposed that the discrete topology optimization into continuous topology optimization. Furthermore, in order to reduce driven-force of machine, an optimization model, location of prismatic joints, is established. Since static and dynamical of the machine is analysis to determined maximal driven force. A large phased array antenna is selected to verify the proposed method. Finally,a satisfied result is obtained and will be applied into the engineering.