Off-Road Vehicle'S Passing Ability Test And Value System Based On Virtual Reality Techology

According to the actual conditions of off-road vehicle tentative development, it requests for higher passing ability, but many problems still exist in the off-road vehicle's passing ability test. Combining the information technology and Virtual Reality technology with automobile industry, the thesis puts forward the research project about new type terrain passing ability test-system based on Virtual Reality and develops its related software.This thesis uses Virtual Reality technology to simulate and value the off-road vehicle passing test. By analyzing the requests and the technology attribute parameters of passing ability and the typical environment of test, 3DS MAX software is used to construct geometrical models, such as off-road vehicle models and terrain models; The mechanics models are constructed from the statics equations; it is using graphics process technology and virtual environment control technology to simulate the whole process of off-road vehicle passing ability test.This system can be used to test the passing ability of an off-road vehicle and also design a new type of vehicle. Changing parameters of vehicles and virtual environments can work out the actual passing status.The software is programmed with the language of Visual C++ 6.0 on the Windows Operation system. OpenGL is used to develop the graphics part. The system software runs well and the cost is low. It will be widely exploited. In this period, the mechanics models used in the system are constructed from statics equations, so they are easy. In the future, more complicate vehicle running procedures will be simulated and more complicate geometrical and mechanics models will be added to the system. Furthermore,the simulation results must be compared with real data in order to improve the performance of this system. Then the system will be more reasonable and accurate.