摘要
在元胞自动机交通流FI模型的基础上,将离散决定性FI模型改进为连续的决定性FI模型,探讨了连续模型的流量及其不稳定行为.为了接近实际交通,在连续决定性FI模型的基础上研究了随机刹车对交通流的影响.研究发现,不管在决定性模型还是考虑随机刹车的模型,都能描绘实际交通流行为中的亚稳态行为.这从理论上解释了实际交通流中的亚稳态现象是由于车辆在一定密度区域分布不均匀的结果.
Based on discrete FI model, a continuous one-dimensional CA traffic model was proposed to describe the high way and research into the fundamental diagrams of the model and its unsteady behaviors. For the sake of comparing the discrete model, influence of flow caused by braking rate is researched. At last, we get analysis result of the traffic flow, and fmd that unsteady behavior of traffic flow appears very easily in certain density districts. And this is exactly the metastable state.
出处
《湛江师范学院学报》
2006年第6期31-36,共6页
Journal of Zhanjiang Normal College
基金
湛江师范学院科研基金资助项目(L0408)
关键词
交通流
元胞自动机
交通模型
FI模型
连续模型
亚稳态
traffic flow
cellular automaton
traffic model
Fukui-Ishibohi model
analysis model
metastable state
