带有频率约束的索网桁架式可展开天线

针对太空索网桁架式可展开天线的结构特点和性能要求对其结构初始设计进行了优化研究。以刚性周边桁架壁厚和柔性索半径为设计变量，结构重量和天线表面精度为目标函数，结构的基频和应力为约束条件，建立了天线的多目标优化数学模型。本文采用序列二次规划法对这一包含有动力约束的非线性复杂模型进行求解，通过实例计算，得到了较为满意的结果，证明了本文模型与方法的可行性和有效性。

Multi-objective Optimization for a Cable-truss Deployable Space Antenna with Frequency Constrain

Optimization on initial design of a cable-truss deployable antenna is made according to the special structure and requirements for space condition. Optimal mathematic model is built with goals of minimum weight and surface accuracy, design variables of truss thickness and cable radius, and constrains of stresses and natural frequency. Since this is a complex problem with nonlinearity and kinetic constrains, sequential quadratic programming method is used to solve it. The optimal result shows the validity and effectiveness of the proposed method and model.