非对称环形天线型面稳定性的参数匹配设计方法

发布时间：2018-01-25 16:07

本文关键词： 非对称环形天线温变环境型面稳定性　出处：《西安电子科技大学学报》2017年03期 　论文类型：期刊论文

【摘要】：为解决非对称环形索网天线在空间温变环境下型面稳定性较差的问题,推导了环形天线索网结构热载荷下的两个平衡方程.为实现索网在空间温变环境下的水平方向稳定,主副索网进行了等张力设计.给出了索网结构进行等张力设计的求解算法,该算法求解时采用最速下降法,比采用直接法具有更好的收敛性.为实现索网结构在空间温变环境下的垂直方向稳定,对主副索网的张力索截面参数进行了匹配设计.利用有限元法对设计进行了验证,结果表明,采用所述方法设计的非对称环形天线索网结构,在极端温度工况下具有很好的型面稳定性.
[Abstract]:In order to solve the problem that the stability of the shape plane of the asymmetric ring cable mesh antenna is poor in the space temperature varying environment. Two equilibrium equations of the circular sky clue network structure under thermal load are derived in order to achieve the horizontal stability of the cable network in the space temperature varying environment. The equivalent tension design of the main and secondary cable networks is carried out, and the algorithm for the equal tension design of the cable-net structure is presented, and the steepest descent method is used to solve the problem. In order to realize the vertical stability of cable-net structure in space temperature variation environment, the convergence is better than that of direct method. The parameters of the tension cable section of the main and auxiliary cable nets are designed and the finite element method is used to verify the design. The results show that the structure of the asymmetric annular sky clue network is designed by the above method. It has good shape stability under extreme temperature condition.
【作者单位】：西安空间无线电技术研究所;
【基金】：国家自然科学基金资助项目(11290154,U1537213)
【分类号】：TN820
【正文快照】： 环形可展开天线由于重量轻、型面精度好、收纳比高,在航天领域得到了广泛的研究和应用[1-3].环形可展开天线反射器主要由索网结构(包括主副索网、张力阵)、金属网和桁架组成,其中索网结构是构成反射器型面的核心部分[4].环形可展开天线在发射时收拢于火箭的整流罩内,入轨后通

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