微观交通仿真中的路网构建与车辆行为建模

发布时间：2018-05-03 14:35

本文选题：交通仿真 + 道路模型　；参考：《长安大学》2014年硕士论文

【摘要】：微观交通仿真由于能够真实地模拟与实际相似的车辆个体行为，，并能给出交通系统的各类参数信息，且能通过计算机动态图形直观地表现出各类交通措施的效果，成为科学解决各类交通问题的行之有效的工具。然而，只有在精确、完整的道路路网信息和逼真、高效的车辆行为仿真模型的基础上，微观交通仿真才能给出具有实际参考价值的仿真结果。因此，仿真路网的构建以及车辆行为的建模就成为微观交通仿真研究的重点。为了提高微观交通仿真中路网的描述能力和构建效率，本文提出了一种三层结构的仿真道路模型和基于Google Map的路网构建方法。其中道路模型从宏观、中观、微观角度分别由道路、路段和车道组成，整个路网模型中既包含可在三维仿真场景中构建道路的几何信息，也包含道路各部分间的逻辑关系信息。通过给出的基于Google Map的路网构建方法可以快速自主地构建仿真路网，而基于SHP的路网构建方法则支持通过已有的SHP文件格式的路网数据快速构建大规模仿真路网，两种构建方法都可构建出符合道路模型要求的仿真路网。为了真实地模拟实际车辆行为，本文在对车辆行为的原因及特点进行研究的基础上，给出了仿真车辆的模型设计，并将车辆行为分为跟驰行为和换道行为分别进行建模。模型可较真实地模拟车辆的跟驰行为并支持在三维仿真场景下车辆的连续换道动作和轨迹的实现，通过在车辆模型中加入参数随机设置提高了仿真结果的多样性。最后，本文给出了以文中提出的路网模型和构建方法以及车辆行为模型为基础的软件设计，并实现了在微观交通仿真系统中的实际应用，通过对仿真系统的测试验证了模型和方法的有效性。
[Abstract]:The microscopic traffic simulation can simulate the individual behavior of the vehicle which is similar to the actual situation, and can give all kinds of parameter information of the traffic system, and can show the effect of all kinds of traffic measures intuitively through the computer dynamic graph. It has become an effective tool to solve all kinds of traffic problems scientifically. However, only on the basis of accurate and complete road network information and realistic and efficient vehicle behavior simulation model, can the microscopic traffic simulation give the simulation results with practical reference value. Therefore, the construction of simulation road network and the modeling of vehicle behavior become the focus of microscopic traffic simulation research. In order to improve the description ability and construction efficiency of road network in microscopic traffic simulation, a three-layer simulation road model and a road network construction method based on Google Map are proposed in this paper. The road model is composed of road, section and lane from macroscopic, mesoscopic and microscopic angles. The whole road network model contains not only the geometric information of the road that can be constructed in the 3D simulation scene, but also the information of the logical relationship between the various parts of the road. The method of road network construction based on Google Map can build the simulation road network quickly and autonomously, while the road network construction method based on SHP supports the rapid construction of large-scale simulation road network through the existing network data of SHP file format. Both methods can construct the simulation road network which meets the requirements of the road model. In order to simulate the actual vehicle behavior, based on the study of the reasons and characteristics of the vehicle behavior, the model design of the simulation vehicle is given, and the vehicle behavior is divided into car-following behavior and changing the path behavior respectively. The model can simulate the car-following behavior of the vehicle and support the realization of the continuous change of track and track in the 3D simulation scene. The diversity of the simulation results is improved by adding the random setting of the parameters to the vehicle model. Finally, this paper gives the software design based on the proposed road network model and vehicle behavior model, and realizes the practical application in the microscopic traffic simulation system. The validity of the model and method is verified by testing the simulation system.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.9;U495

【参考文献】