虚拟环境中运动车辆行为仿真的程序方法研究

研究了具有自然起伏地形特征的虚拟环境中，运动车辆行为姿态变化的三维仿真问题。设计出一种根据车辆的支撑平面计算姿态显示参数，从而实现车体状态实时自动调节的算法。给出了算法的具体描述和实现结果，并对其中的关键技术进行了比较详细的讨论。该算法对车轮轮子个数没有限制，对于履带式车辆也是适用的。仿真显示了视觉上的逼真性，证明了该方法在虚拟仿真及虚拟现实其他领域的可应用价值。

Procedural Method for Attitude Simulation of Moving Vehicles in Virtual Environment

The visual simulation technology is of great significance to describe the virtual environment, and the moving attitude dynamic display technique of 3D virtual objects is a key technique. This paper studies the attitude realistic display technology of a running vehicle in the virtual environment with a natural undulating terrain. With varying local conditions of the terrain, the vehicle attitude shows a corresponding change because of the effect of gravity. An algorithm is designed for computing the attitude display parameters according to the body support plane of the vehicle defined by the lowest point of its wheels. The paper presents the process of the algorithm, and provides a detailal discussion on some important techniques. The algorithm is suitable for the vehicles with different number of wheels as well as tracklayer, etc. , and only a reasonable support plane is to be defined.The simulational result shows the highly realistic effect.