基于MultiGen Creator的汽车虚拟试验场仿真研究

发布时间：2018-03-03 22:29

本文选题：视景仿真　切入点：汽车试验场　出处：《长安大学》2016年硕士论文　论文类型：学位论文

【摘要】：视景仿真(Visual Simulation)技术又称为虚拟现实技术,是近几年计算机仿真领域中发展最快的一部分。它通过建立具备视觉、听觉、触觉三位一体的虚拟空间模型再现出与现实状况非常相似的虚拟环境,让体验者产生仿佛置身于真实环境中的逼真感受。目前,视景仿真技术已被广泛运用于环境规划、模拟训练、军事演练,飞行器仿真以及交互式娱乐仿真等众多领域。本文将虚拟现实技术应用到汽车道路试验中,对汽车虚拟试验场仿真进行研究。选取MultiGen Creator作为建模工具,设计综合性虚拟汽车试验场参数与布局,运用多种技术手段解决仿真试验实时性与逼真度的问题,构建完整的虚拟试验场与仿真车辆模型,运用Vega-prime对该系统进行特性参数配置完成车辆仿真驱动,验证了该仿真平台的可行性。对试验场结构、试验道路的功能及试验场主要设施进行分析,结合建模的难度,设计合理的试验场参数,并对虚拟试验场的布局进行合理规划,在保证试验效率的前提下提高土地利用率。对建模过程中遇到的重难点问题进行研究,设计合适的解决方案,提高模型逼真度的同时降低模型数据库占用的内存,更好地满足仿真驱动的实时性与逼真度的要求。设计仿真车辆的驾驶界面使得体验者视觉感受更真实。运用Lynx-prime可视化编辑器对虚拟汽车模型与试验环境进行配置,从多个视点观察车辆运动状态,并将其集成在一个视窗中。对试验车辆与试验场环境之间添加碰撞检测器,使得车辆能在试验场地形中按照汽车运动方式正常行驶,完成仿真驱动。
[Abstract]:Visual Simulation, also known as Virtual reality, is the fastest growing part of the field of computer simulation in recent years. The virtual space model of tactile trinity reproduces the virtual environment which is very similar to the real situation, and makes the experiencer feel lifelike as if in the real environment. At present, the visual simulation technology has been widely used in environmental planning. Simulation training, military exercise, aircraft simulation, interactive entertainment simulation and so on. In this paper, virtual reality technology is applied to vehicle road test, and vehicle virtual test field simulation is studied. MultiGen Creator is selected as modeling tool. The parameters and layout of the comprehensive virtual vehicle test field are designed, and the real-time and fidelity problems of the simulation test are solved by various technical means, and the complete virtual test field and the simulation vehicle model are constructed. The feasibility of the simulation platform is verified by configuring the characteristic parameters of the system with Vega-prime, and the feasibility of the simulation platform is verified. The structure of the test ground, the function of the test road and the main facilities of the test ground are analyzed, and the difficulty of modeling is combined. The reasonable parameters of the test site are designed and the layout of the virtual test ground is reasonably planned to improve the land utilization ratio on the premise of ensuring the test efficiency. The important and difficult problems encountered in the process of modeling are studied and the appropriate solution is designed. Improve the fidelity of the model while reducing the memory consumed by the model database, It can better meet the requirements of real-time and fidelity of simulation drive, design the driving interface of simulated vehicle to make the visual experience more realistic. The virtual vehicle model and test environment are configured with Lynx-prime visual editor. Observing the motion state of the vehicle from multiple viewpoints and integrating it into a single window. The collision detector is added between the test vehicle and the environment of the test ground, so that the vehicle can travel normally in the terrain of the test ground according to the mode of motion of the vehicle. Complete the simulation drive.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.5

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