基于改进最优速度的车辆跟驰模型及数值模拟  

CAR-FOLLOWING MODEL BASED ON IMPROVED OPTIMAL VELOCITY AND ITS NUMERICAL SIMULATION

作　　者：杨晓明[1] 

机构地区：[1]西安翻译学院诒华学院,陕西西安710105

出　　处：《计算机应用与软件》2015年第6期117-119,共3页Computer Applications and Software

摘　　要：为了克服传统最优速度模型(OVM)单一考虑车间距对最优速度影响的不足,在同时考虑跟驰车与前导车之间的车间距和相对速度对后车跟驰行为影响的基础上,提出一种基于改进最优速度的车辆跟驰模型。通过对模型线性稳定性分析,得到改进模型的稳定性条件,并与OV模型进行比较,发现改进模型的稳定区域显著增加。最后对改进模型进行数值仿真,结果表明基于改进最优速度的车辆跟驰模型能明显增强交通流的稳定性。In order to overcome the deficiency of only considering the influence of car spacing on optimal speed in traditional optimal velocity （OV）model,we propose an improved optimal velocity-based car-following model on the basis of taking the influence of both the car space and relative speed between the following vehicle and preceding vehicle on the following behaviour of the car in rear into account. Through analysing the linear stability of the model,we obtained the stability condition of the improved model,and compared it with traditional OV model.We found that the improved model has significant increase in its stability region;Finally,we conducted numerical simulation on the improved model,results showed that the car-following model based on improved optimal velocity can noticeably enhance the stability of the traffic flow.

关 键 词：交通流 跟驰模型 稳定性分析 最优速度 数值仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] U491.2[自动化与计算机技术—计算机科学与技术]