Disassembly Process Planning And Simulation For Virtual Maintenance

Virtual reality technology can increase the level of maintenance training to solve the current laggard situation. In the thesis the key technologies are studies for virtual maintenance disassembly process planning and simulation system. A prototype system is built for to provide supporting platform for virtual maintenance training and simulation.For the problem of the scene construction for the virtual maintenance, two strategies are gived in the thesis for virtual maintenance scene development .To the not fully compatible of the CAD system and the VR system, model transformation and model optimization are studied in the thesis.Petri net disassembly sequence planning is studied based on constraints between components. A data list of disassembly sequence is established with the model characteristics. Disassembly path planning is based on EON. In order to ensure the feasibility of disassembly process, real-time collision detection and key points record of the path are performed in the disassembly process. The information of the path key points is assigned to disassembly sequence data list and used to support disassembly process simulation. The interaction control of scenarios and virtual maintenance object in a virtual maintenance system are also studied, such as designing the function about the view changes of TPO and designing the interact control of the object by six degrees of freedom.A preliminary prototype is developed by using the virtual reality development platform EON Studio 5.0, VC and Script programming language under the Windows XP system. This System can implement some representative function of Virtual maintenance disassembly such as model loading, disassembly path planning, and disassembly process simulation and so on.