基于动力学模型的汽车制动稳定性虚拟展示

Virtual Display of Vehicle Braking Stability Based on Dynamic Model

现有3D引擎的物理模型不能真实反映车辆制动时的运动状态。为此,提出一种汽车制动稳定性虚拟展示系统。建立汽车动力学模型,包括四轮车辆模型和车轮轮胎模型,利用上层仿真软件对动力学模型进行运算和虚拟场景渲染,给出车轮状态和虚拟仪表的展现方法,并基于3D引擎设计虚拟展现系统。实验结果表明,该系统能同时观测整车及车轮的运行状态,实时再现制动过程中车轮抱死、车身横摆侧滑的行为,其动力学模型能够满足虚拟展现对画面渲染的实时性、连续性要求。

Since the simple physical model of current 3D game engine cannot truly reflect the vehicle baking state of motion,a virtual display simulation system of vehicle braking stability is proposed.The vehicle dynamic model including four-wheel vehicle model and wheel tire model is established.The upper simulation software is used to compute the dynamic model and to render the virtual scenes.The display method of tire state and the virtual meters are given,and then the virtual display system is designed and developed by 3D game engine.Experimental results show that this system can observe simultaneously the running state of vehicle and wheels,and reproduce behaviors of the wheel lock,vehicle yaw and sideslip.The dynamic model can satisfy the real-time and continuous requirement of screen rendering for virtual display.