摘要
研究了基于跟驰模型的交通流混沌传播特性问题。用Matlab软件编制皮埃莱(Bierley)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车头间距的变化过程;通过分析这种车头间距的变化过程的变化曲线,说明基于跟驰模型产生的交通流存在着混沌现象。为了说明交通流混沌具有传播特性,给出了正弦干扰和一次性梯形干扰两种情况下的仿真结果,并做了简要的分析。
Transmission of chaos in simulation traffic flow based on the Car-following model is studied. The simulation traffic flow is generated based on Bierley Car-following model which is programmed using MATLAB. The changing processes of space headway of the front vehicle and the following vehicle in the traffic flow are obtained by the simulations under the different conditions. The analysis of the changing processes shows that chaos of the traffic flow exists indeed. In order to show transmission of chaos in traffic flow, the simulation results for two cases are given: the chaos cause of the sine-formed disturbance signal in traffic flow and the chaos cause of the stair-formed disturbance signal in traffic flow. The results are analyzed briefly.
出处
《土木工程学报》
EI
CSCD
北大核心
2004年第1期70-73,共4页
China Civil Engineering Journal
基金
国家自然科学基金项目(59978030)
关键词
交通流
跟驰模型
混沌
传播
traffic flow
car-following model
chaos
transmission
