摘要
提出了一种基于形面多点调节的紧缩场反射器面板精密柔性成形新技术,对面板形面调节机理进行了分析,提出了确定调节点位置、数量、调节量的形面调节核心技术,借助数值模拟方法确定了矩形面板调节点位置、数量,在实验基础上建立了调节量计算方法.设计、开发了面板形面调节实验平台;针对具有不同初始形面误差的面板进行了形面调节可行性数值模拟分析及实验验证.结果表明,利用所提出的调节技术和开发的形面调节实验平台能够实现双夹层金属蜂窝面板形面的有效调节,获得很高的形面精度.该项技术可以在现行成形技术的基础上进一步提高形面精度,可明显提高面板制造成品率,解决大尺寸高精度面板和较大曲率面板的制造难题,并能改善面板的使用及维护性能,延长紧缩场的使用寿命.
The high precision of antenna reflector panels is the key to develop the technique of high performance compact antenna test range. A new technique of contour adjustment for high precision sandwich reflector panels was developed. The principle of the contour adjustment of panels was analyzed. The core technology problems such as the decision of adjustment points＇ position and number, the adjustment value on each points were proposed. By use of numerical simulation, how many and where the adjustment points should be were determined. The algorithm for adjustment value calculation was verified by experiments. A contour adjustment device was designed and developed. Numerical simulation and experiments of contour adjustment were conducted against all possible shape error distribution. The results show that, by use of the adjustment device and the proposed core technique, the contour of panels can be adjusted effectively and the contour pre- cision can be improved greatly. Additionally, contour adjustment technology makes it possible to use for the panels with bigger size and higher contour precision, to increase the qualified rate of finished product obviously and to improve the maintenance performance of reflector panels.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2009年第2期127-131,共5页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金资助项目(10477001
50575010)
关键词
紧缩场
反射器面板
成形
形面调节
数值模拟
compact antenna test range
reflector panel
forming
contour adjustment
numerical simulation
