摘要
FAST是我国“十一五”期间大科学工程,为了使天体电磁波经反射后馈源舱的接收效果最好,需调整促动器的伸缩量,将反射面变形为主反射面,且尽量贴近理想抛物面。本文基于解析几何理论,通过交点坐标、焦距长度、焦距方向等条件,建立标准式、下偏式以及查阅式3种策略抛物线方程,并分别进行理想抛物面与基准球面嵌套。仿真结果表明:下偏式类型的理想抛物面与基准球面的过渡相对平滑。
Fast is a large-scale science project during the’Eleventh Five-Year Plan’’period of China.In order to make the receiving effect of celestial electromagnetic wave best after reflection,it is necessary to adjust the expansion amount of the actuator to deform the reflecting surface into the main reflecting surface and make it close to the ideal paraboloid as much as possible.Based on the theory of analytic geometry,through the conditions such as intersection coordinates,focal length and focal length direction,this paper establishes three kinds of strategic parabolic equations,which are standard equation,downward deviation equation and reference equation,and embeds the ideal paraboloid with the reference sphere respectively.The simulation results show that the transition between the ideal paraboloid of the downward deviation type and the reference sphere is relatively smooth.
作者
张迪
裴智明
靳谦诚
ZHANG Di;PEI Zhi-ming;JIN Qian-cheng(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024 China)
出处
《科技创新与生产力》
2022年第7期18-20,共3页
Sci-tech Innovation and Productivity
