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Shape adjustment of cable mesh antennas using sequential quadratic programming

机译：使用顺序二次编程调整电缆网状天线的形状

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摘要

Cable mesh structure is an important way to construct large space deployable antennas. Due to inevitable manufacturing and assembly errors and external environment disturbance, the reflector surface of cable mesh antennas has to be carefully adjusted to achieve required accuracy. This is achieved by altering the length of some cables capable of adjustment. In this paper a shape adjustment procedure based on optimization is presented. A rigorous cable element is first derived, which can treat the cable length variation and the geometric nonlinearity of cable mesh structures. Then the incremental expressions of the reflector surface displacement and the tension exerted on the rim truss are developed, and the surface error is explicitly related to the cable length variation. Finally the shape adjustment procedure is converted into a sequential quadratic programming problem which can effectively reduce the surface error and can be easily solved. A numerical example is presented to demonstrate the feasibility of the method.
机译：电缆网状结构是构造大空间可展开天线的重要方法。由于不可避免的制造和组装错误以及外部环境干扰，必须仔细调整电缆网状天线的反射器表面，以达到所需的精度。这是通过改变一些可调节电缆的长度来实现的。本文提出了一种基于优化的形状调整程序。首先得出一个严格的电缆元素，它可以处理电缆长度变化和电缆网状结构的几何非线性。然后建立了反射器表面位移和施加在轮缘桁架上的张力的增量表达式，并且表面误差与电缆长度变化明显相关。最终，将形状调整过程转换为顺序二次规划问题，可以有效地减少表面误差并易于解决。数值例子说明了该方法的可行性。

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  • 来源
    《Aerospace science and technology》 |2013年第1期|26-32|共7页
  • 作者

    Jingli Du; Yali Zong; Hong Bao;

  • 作者单位

    Key Laboratory of Electronic Equipment Structure Design of Ministry of Education, Xidian University, Xi'an, Shaanxi 710071, China;

    Key Laboratory of Electronic Equipment Structure Design of Ministry of Education, Xidian University, Xi'an, Shaanxi 710071, China;

    Key Laboratory of Electronic Equipment Structure Design of Ministry of Education, Xidian University, Xi'an, Shaanxi 710071, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Shape adjustment; Cable mesh structures; Deployable antennas; Optimization;

    机译：形状调整;电缆网状结构;可展开天线;优化;

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