摘要
在对宽带扇锥天线的结构分析与计算中,传统的几何方法是将边吊索视为受均布荷载作用的柔索,在二维平面内按二次抛物线进行的,这种方法难以保证天线施工后的成型良好。本文讨论一种工程实用的宽带扇锥天线的较为精确的结构分析与计算方法。首先应用悬垂线方程式计算边吊索上各悬挂点的三维坐标,然后应用力矩公式修正以上计算结果,确定各振子线的长度。本方法适用于不等大小、不等间距、不同方向集中荷载作用下的线天线悬吊索,可以保证天线施工后的成型良好。在工程实用上,与传统的几何方法计算的结果相比,本方法得出的解更为精确。
In structural analysis and calculation of wideband fan-shaped antenna, it is difficult for the conventional geometric method to ensure fine shape of the antenna, for it considers the side rope sling as suspended cable under evenly distributed loads in two-dimensional plane by the quadratic parabola. We present a new method for structural analysis and calculation of wideband fan-shaped antenna. Firstly, the three-dimensional coordinates of suspension points on the side rope sling is determined by the suspended-cable equations, and their coordinates are corrected by the moment equations. Then, the lengths of antenna wire segments are determined. This method applies to the wire antenna＇s rope slings imquenced by focus forces with different strength, distance and direction, and it ensures excellent shape to the antenna. Compared with the calculation result by conventional geometric method in practical engineering, the result by our method is more accurate.
出处
《机械科学与技术》
CSCD
北大核心
2007年第9期1198-1201,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家科技部科技型中小企业技术创新基金项目(04C26221101009)
关键词
天线
悬索结构
悬挂结构
结构分析
antennas
suspension structures
suspended structures
structural analysis
作者简介
崔建新（1957-），男（汉）。河南，高级工程师，硕士。cuijianxin2000@yahoo.com.cn.
