某机动式雷达天线阵面结构优化设计方法研究

文中提出了机动式雷达天线阵面结构正向设计方法,对雷达天线阵面进行了轻量化设计.应用经典力学求解天线阵面在静力学工况下的最大应力和变形,将此作为优化约束条件,将阵面质量作为优化目标,建立天线阵面的数学模型,用遗传算法进行第1次设计优化,得到天线阵面的初始结构参数综合考虑静力学工况与动力学工况,进一步用ANSYS系统的APDL建立参数化有限元模型,进行第2次优化,得到天线阵面的结构参数.文中对某型号的机动式雷达天线阵面进行了正向设计,并将优化结果与该雷达现有设计结果进行了分析对比.结果表明该正向设计方法合理,轻量化效果明显.

Research on Optimization Design Method for Antenna Array Structure of a Mobile Radar

The top-down design method of a mobile radar antenna array is proposed in this paper. The classical mechanics is used to solve the maximum stress and deformation of the antenna array in static working condition. Then the mathematical model is built, taking the maximum stress and deformation as the optimization constraint conditions and the mass of the antenna array as the optimization objective. The first optimization design is carried out using genetic algorithm and the initial structure parameters are obtained. A parameterized finite element model is further established using APDL of ANSYS system. The antenna structure parameters are obtained after the second optimization, with both the static condition and dynamic condition considered. Top-down design is conducted in the design of a type of mobile radar, and the optimization result is compared with the existing result of this radar. It shows that the top-down method is reasonable and the lightweight effect is obvious.