Key Technologies in Implementing a Virtual Simulation System for EMU Bogies Maintenance

In order to support repair and maintenance of CRH380BL high-speed EMU bogie,the authors used virtual reality,multimedia and simulation technologies in developing an EMU bogie overhaul virtual simulation support system.It provided a multi-media platform that enables trainees to quickly master the maintenance skills and provides assistance for repair and maintenance as well as a visual channel for communication in other relevant occasions.After a brief introduction of the bogie structure,the paper describes in detail the key technologies for interactive three-dimensional model browsing,virtual assembly simulation,multimedia information integration,interactive techniques and data compression.