摘要
介绍了FAST光机电一体化的索支撑轻型指向跟踪系统的关键技术之一 次支撑系统,并对一次支撑系统1:30缩尺模型进行了系统的实验研究,测试了小车在跟踪模式下不同轨迹上的控制效果,测量并计算了小车的等效刚度,通过刚度系数估计了小车的风载响应.实验结果表明,本文所提出的一次支撑方案可以达到一次支撑结构所要求的位置控制精度.本文的研究对利用大跨度悬索体系实现对空间目标的精确位置控制具有一定的参考价值.
The first feed-support system, which is one of the key techniques of FAST, is introduced in this paper. Systemic experimental research with the scaled model, which is one of thirtieth of actual structures, is made. In the experiment, the position deflection of the feed-car was analyzed when the feed-car ran along the part of a circle. Furthermore, the equivalent rigidity of the system was measured and the position deflection of the feed-car resulting from wind was computed. The research results confirmed that the first feed-support system meets the required position control precision. Also, the results are very helpful to the precise position control of the large span cable structures.
出处
《空间科学学报》
CAS
CSCD
北大核心
2003年第1期68-73,共6页
Chinese Journal of Space Science
基金
中国科学院国家天文观测中心大射电望远镜实验室资助项目
关键词
大射电望远镜
馈源
缩尺模型
一次馈源支撑系统
Large radio telescope, Source feed, Scaled model, First feed- support system
