摘要
BML模型是专门用于模拟分析交通现象的元胞自动机模型,利用此模型通过计算机模拟二维城市交通流系统,找出车辆的平均速度与平均密度等参数的关系,通过编程模拟的交通流的时空图可以得出当车辆密度保持基本不变时,交通流由完全阻塞相恢复到运动相存在着自组织性,并且指出相变点的位置与平均密度有着密切的关系,同时分析了临界密度在交通控制中的实际意义。
BML （Biham, Middleton and Levine） model is a kind of cellular automata model, which especially is used to simulate and analyze the traffic system. Using this model, the relationship between the average velocity and the average density is found by computer programs. It also shows self-organization phenomenon existing in the processing from the jamming phase to the mobile phase when the average density is held invariable. And at the same time, the relationship between the position of the phase transition and the average density is also found. And at last. the effect of the critical density is analyzed.
出处
《计算机工程与设计》
CSCD
北大核心
2006年第21期4139-4141,共3页
Computer Engineering and Design
关键词
BML模型
自组织性
平均速度
平均密度
临界密度
BML model
self-organization
average velocity
average density
critical density
