考虑多种随机行为的车辆行驶变虚坡模型

Simulation Model of Running Vehicles with Changing Imaginary Slope Including Multiple Random Factors

对车辆的行驶行为进行计算机仿真已有较多的研究,给出了许多有用的模型,其中最具代表性的模型是元胞自动机模型。元胞自动机模型在反映车辆行驶的行为特征上有其局限性。为此,在车辆虚坡模型的基础上,引入了多种随机因素,其中车辆的虚坡包含一个附加宽度,此附加宽度受上述多种随机因素影响而变化。仿真结果表明,有关主要趋势与实际趋势一致。

A lot of research work has been done on the simulation of running characteristics of vehicles,and a lot of useful models have been proposed.One of the typical models for the simulation of traffic flow is cellular automaton model.But a cellular automaton model has limitations in revealing running characteristics of vehicles.And the imaginary slope model proposed before doesn′t contain any random factor.To this end,multiple random factors are introduced to the imaginary slope model in which the imaginary slope takes an additional band which changes according to multiple random factors.A simulation example shows that it is easy to be operated in the case of many cars,and the main tendencies show a good coincidence with the real processes.