交通流稳定性的分子动力学分析

Analysis on Traffic Flow Stability by Molecular Kinetics

为有效预防交通拥堵现象的发生、减小交通事故发生率,依据Lyapunov稳定性判断方法,以均匀状态的同步流为对象,考虑人、车、路和环境等因素的综合作用,对交通流稳定性进行分子动力学分析并建模;以车辆轨迹线图和交通流状态图的方式分析各种交通扰动因素条件下的交通流稳定性动态演变过程;通过揭示诱发交通流失稳现象的机理以及考虑人、车、路和环境等交通场景来改善交通流稳定性。

In order to effectively prevent the occurrence of traffic congestion, reduce traffic accident rate, based on the criterion of Lyapunov stability, the traffic flow stability is analysed by molecular kinetics and the model is developed regarding the traffic flow at the state of uniform synchronous flow as the object, considering the integrative effect of people, vehicles, road and environment, etc. With the trajectory graph of vehicle and the state diagram of traffic flow, the evolution process of traffic flow stability influenced by various factors of traffic disturbance is analysed. The mechanism inducing the phenomenon of traffic flow instability is revealed. It is pointed out that traffic flow stability can be improved considering traffic scenes such as people, vehicle, road and environment.