| 交通流的有序运动与混沌运动相互转化现象的仿真研究 |
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| 引用本文： | 贺国光,王东山.交通流的有序运动与混沌运动相互转化现象的仿真研究[J].土木工程学报,2003,36(7):53-56. |
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| 作者姓名： | 贺国光 王东山 |
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| 作者单位： | 天津大学
(贺国光)，天津大学(王东山) |
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| 摘 要： | 用Matlab软件编制皮埃莱(Bieriey)模型来产生仿真交通流。在一定的参数组合下,仿真研究了交通流车队中前后车辆之间的车头间距的变化过程。分析了这种车头间距变化过程的曲线。给出该曲线的二维(间距差与速度差)和三维(间距差、速度差、时间)相图。从相图上可以明显地看出存在奇怪吸引子,这说明基于跟驰模型产生的交通流存在着混沌现象。从相图还可以清楚地看出交通流混沌运动与有序运动之间的转化过程。联系交通流的实际情况,对仿真结果做了分析。
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| 关 键 词： | 跟驰模型 交通流仿真 混沌 奇怪吸引子 有序运动 |
| 文章编号： | 1000-131X(2003)07-0053-04 |
| 修稿时间： | 2003年3月28日 |
SIMULATION STUDY ON THE TRANSITION BETWEEN CHAOS AND ORDER MOTION IN THE TRAFFIC FLOW |
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| He Guoguang Wang Dongshan.SIMULATION STUDY ON THE TRANSITION BETWEEN CHAOS AND ORDER MOTION IN THE TRAFFIC FLOW[J].China Civil Engineering Journal,2003,36(7):53-56. |
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| Authors: | He Guoguang Wang Dongshan |
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| Abstract: | The simulation traffic flow is generated based on Bierley Car-following model, which is programmed using MATLAB. The simulations under the different conditions obtain the changing processes of space headway of the front vehicle and the following vehicle in the traffic flow. The simulation results of the changing processes are analyzed. The orbits of the changing processes in two dimensions(space headway and speed difference)and three dimensions(space headway, speed difference, and time)phase space are given. It is clear from the orbit in phase space that the strange attractors exist which means that chaos of the traffic flow exists indeed. The orbit in phase space shows the transition process between chaos motion and order motion clearly. The simulation results are analyzed compared with real traffic flow. |
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| Keywords: | car-following model traffic flow simulation chaos strange attractor order motion |
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