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雷达天线座结构的固有频率是系统性能的一个重要参数,已有各种不同的计算方法。然而对于雷达结构参数对系统固有频率的影响以及系统的薄弱环节,所见资料较少。本文应用近代数学中最优化方法的基本思想,对影响天线座系统固有频率的各个环节进行分析计算,以曲线形式给出各结构参数对系统最低固有频率的影响程度,进而确定了系统的薄弱环节。进一步对薄弱环节进行优化计算,可获得提高系统固有频率的最佳修正方案。本文分析了二种较为典型的雷达天线座结构的俯仰、方位的四种振动的方式,由此引出的结论可为设计提供一些有益的借鉴。
The natural frequency of the radar antenna mount structure is an important parameter of the system performance. There are various calculation methods. However, the influence of radar structural parameters on the natural frequency of the system and the weak links in the system are less. In this paper, the basic idea of the optimization method in modern mathematics is applied to analyze and calculate the various links that affect the natural frequency of the antenna base system. The degree of influence of each structural parameter on the lowest natural frequency of the system is given in the form of a curve and the weak links of the system are determined . Further optimization of the weak links can be obtained to improve the system’s natural frequency of the best correction program. In this paper, four typical pitching and azimuth vibration modes of two typical radar antenna base structures are analyzed, and the conclusions drawn from this can provide some useful references for the design.