摘要
五百米口径射电望远镜(FAST)反射面采用柔性索网作为主体支撑结构,根据拟定的变形策略要求,通过促动器连接下拉索控制主索节点变位实现巡天观测。变形策略参数值的不同会影响索网节点位移量。因此,本文基于数值计算软件Matlab建立主索节点变位数值模型,分析不同变形策略下主索节点径向、经向、纬向的位移量,在分析现有的三种变形策略的基础上,探索新的合理变形策略降低综合位移量,提高索网运行的可靠性。
The reflective surface of Five-hundred-meter Aperture Spherical radio Telescope （FAST） is supported by cable-net structure, which changes into instantaneous parabolic to observe with the proposed deformation strat- egy. The displacement of the cable-net nodes is affected by parameter valuet of the deformation strategy. Howev- er, the paper establishes a numerical model and analyzes the displacement of the three directions in the different deformation strategies, including radial direction, longitude and latitude direction. Moreover, the paper puts for- ward a new and reasonable deformation strategy which reduces overall displacement and improves the reliability of the cable network running.
出处
《贵州大学学报（自然科学版）》
2012年第6期24-28,43,共6页
Journal of Guizhou University:Natural Sciences
基金
国家自然科学基金(批准号:11273001)
关键词
FAST
变形策略
主索节点位移量
FAST
deformation strategy
displacement of the cable-net nodes
