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为实现高频弱信号通讯,空间网状可展开天线的尺寸越来越大,且对形面精度要求也越来越高,因此与天线形面精度相关的许多课题引起了宇航界的极大关注,特别是在如何提高索网式天线反射面精度调整的效率,用较少次数的测量和调整,使天线反射面的精度达到指标要求方面需求更为迫切。利用有限元分析方法,针对环形桁架可展开天线形面精度调整中的问题,建立了基于影响系数矩阵的多目标的精度优化调整数学模型,并采用遗传算法求解,数值结果表明,此方法能够大幅度提高天线的形面调整效率,对工程应用具有指导意义。
In order to realize the communication of high frequency and weak signal, the size of the space reticular deployable antenna is getting bigger and larger, and the requirements on the surface accuracy are also getting higher and higher. Therefore, many problems related to the antenna surface accuracy have caused the great Concerned, in particular, how to improve the accuracy of cable mesh reflector surface precision adjustment, with fewer times of measurement and adjustment, so that the accuracy of the antenna reflector surface to meet the requirements of the index requirements more urgent. In order to solve the problems in the adjustment of antenna surface accuracy of deployable toroidal truss, a multi-objective precision optimization adjustment mathematical model based on influence coefficient matrix is established and solved by genetic algorithm. The numerical results show that this method can greatly Amplitude to improve the shape of the antenna surface adjustment efficiency, the application of engineering guidance.