The Creation And Application Of Digital Twin Model For Five-Hundred-Meter Aperture Spherical Radio Telescope

Five-Hundred-Meter Aperture Spherical Radio Telescope,called FAST for short,was completed and put into operation in 2016 in Guizhou,China,surpassing the Arecibo telescope of the United States to become the largest radio telescope in the world.In order to avoid electromagnetic pollution,FAST project is located in a remote mountainous area,which is inconvenient to visit the site.The structure of FAST is complex,with high operation and maintenance accuracy,large workload and long maintenance cycle.Arecibo Telescope is at risk of being shut down,because it has fallen into disrepair due to changes in management and lack of funds.How to avoid the same dilemma,promote the effective inheritance and protection of FAST equipment information,and meet the needs of long term operation management and maintenance has become an urgent problem to be solved.In recent years,many countries have launched manufacturing transformation strategies,and digital twinning technology has become a research hotspot as a key technology to realize the interaction and fusion between the physical and information world.In order to promote the popularization of FAST science education and achievements,protect the inheritance of FAST facility information,and assist FAST in the use,maintenance and development planning of FAST,this paper analyzes the six components of FAST system,creates and visualizes the digital twin model of FAST active reflector system and feed support system,and discusses its application.The active reflector system of FAST is mainly composed of reflecting element,steel cable,perimeter beam,lattice column and actuator.FAST feed cabin suspension system is mainly composed of feed cabin,cabin docking platform,feed support tower and cable drive.The development environment adopted in this paper is Neo Kylin domestic operating system,and the 3d manual modeling and automatic code modeling are carried out for these two systems by using Blender 3d open source tools combined with Python programming language.Code modeling abstracts the physical model into the geometric model,analyzes the mathematical relationship,and realizes the modeling by programming,which can improve the modeling efficiency and accuracy.Finally,this paper integrates all models of FAST,visualizes FAST digital twin model through Blender game engine,and puts forward its application in popular science education,information inheritance and protection,and digital twin industrial intelligence.Through the above research,based on Neo Kylin domestic operating system,FAST digital twin model is automatically created by Blender software and Python code,which provides a quick and effective method for 3d modeling of complex structures in both technical and theoretical aspects.The application of digital twin technology in the popularization of science,information inheritance,protection and maintenance of large-scale scientific research facilities provides a reference for the application and development of digital twinning technology.