| The virtual assembly is the significant application of the virtual reality (VR) technology. In this thesis, the functions of the virtual assembly simulative system (VASS) for the equipments of nuclear power plant are analyzed, the systematic structure and the component modules are constructed, and also the technical standard and route scheme of how to implement the VASS are proposed. The three-dimensional modeling, multimedia and interactive simulation technologies are characters of the system which is accomplished with using the design method of user-oriented. The main work of this thesis is as follows:1. The research and application to the virtual assembly and VS system are firstly outlined, and then the purpose and main research contents of the system are proposed.2. The design objective, criterion and strategy are ascertained according to the engineering background of the project and the VR system design method, then the constitution of function modules of VASS are designed by means of the function analysis to the system.3. The three-dimensional models of essential equipments are established, including reactor, main coolant pump, steam generator, pressurizer and surroundings scenes of nuclear power plant, etc.4. The implementation procedure of developing the virtual assembly sub-modules of the essential equipments and the cruise sub-modules both outside the plant surroundings scenes and the inside containment vessel are all illustrated. The functions of the VASS including scenes cruise, multi-windows observation, assembly(or disassembly) demonstration of the parts, assembly(or disassembly) interactive, assembly parts restoration, sound and text prompt, interactive disassembly (or assembly) step prompt, and parts hiding(or display) are developed.5. The visual human-computer is designed, and the sub-modules of the visual simulation are integrated; At last, the virtual assembly simulative system for the equipments of nuclear power plant is developed.
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