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为确保天线的表面精度和工作性能,综合考虑了天线结构重量、频率、布局等诸多因素,提出了基于优化的设计方法来平衡这些因素。以绳索预张力大小、纵向调整索数目、辐射单元数目为设计变量,结构重量和网状反射面的均方根误差最小为目标函数,应力和频率为约束条件,建立了索网式可展开天线设计的多目标优化数学模型。并将多目标化为单目标用遗传算法进行了求解,结果表明:在结构表面精度达到约2mm的条件下,结构重量能减轻12%。这表明文中所提出的优化设计方法是有效可行的,对网状天线结构的设计具有一定的指导意义。
In order to ensure the surface accuracy and performance of the antenna, the factors such as the weight, frequency and layout of the antenna structure are taken into consideration, and an optimization-based design method is proposed to balance these factors. Based on the minimum pre-tension of rope, the number of longitudinal adjustment cables, the number of radiation units as design variables, the minimum of root mean square error of structure weight and reticular reflector as the objective function, stress and frequency as constraints, a cable network deployable antenna Design of multi-objective optimization mathematical model. And the multi-objective into a single goal by genetic algorithm was solved, the results show that: the structure of the surface accuracy of about 2mm conditions, the structure can reduce the weight of 12%. This shows that the proposed optimization design method is effective and feasible, and has certain guiding significance for the design of mesh antenna structure.