An optimization method for shape adjustment of perimeter-truss mesh antenna reflectors was put forward.With the assumption that only one cable element to be adjusted in once time, and based on the fundamental frequency of mesh structure and the errors of each adjustable nodes, a scheme for choosing the best element to be adjusted in current procedure was firstly proposed. Then, optimization model for only once shape adjustment procedure was developed, with variation of the element length as design variables, root mean square(RMS) error of the adjustable nodes as objective function and element stresses as constraints. The numerical example shows that the proposed method possesses a rapid convergence rate and needs low adjusting workload.

提出了一种周边桁架式索网天线型面的快速调整方法。以最大误差节点及结构基频为判定条件，首先给出最佳待调整索段的确定方法，在此基础上，以最佳待调整索段的调整量为设计变量，型面误差为目标函数，索网应力为约束条件，建立了索网天线型面优化调整的数学模型。数值算例结果表明，所提出方法具有很好的收敛速度，调整工作量较小。

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索网天线, 反射面, 表面误差, 精度, 优化设计