Hoefs标定下GM跟驰模型仿真分析

Simulation and Analysis of GM Car-Following Model with Hoefs Standardizing

通过对GM模型发展过程的分析与阐述,引入Hoefs标定的GM跟驰模型的参数组合,应用Matlab构建仿真环境,以车头间距为研究对象,拟定试验情景,分别对Hoefs标定在不同运行状态下的参数组合进行了仿真,分析了不同参数组合下跟驰队列车头间距的变化情况.结果表明:在加速跟驰、无刹车减速跟驰和刹车减速跟驰状态下,跟驰队列的波动均呈现一定程度的衰减,但波动幅值和频率的衰减依次增大,且跟驰队列车头间距波动幅值的衰减程度随着参数的增大而减小;在加速跟驰状态下,跟驰车辆的三维相图呈螺旋轨迹,其余状态下呈无规则波动.

The car-following behavior is described, and the GM model development process is analyzed. By in- troducing the parameter combinations of GM car-following model with Hoers standardizing, simulation environ- ment is constructed with Matlab. Taking the headway as the research object, the test scenarios is developed, and simulated on the parameter combinations under different operating conditions. The results show that the fluctua- tion of car-following queue will appear to be weaken in the case of acceleration with brake deceleration, but the attenuation of fluctuation amplitude and frequency will increase in order, and the attenuation degree of fluctua- tion amplitude in car-following queue will decrease as the parameter a increasing the three-dimensional phase diagram of following car appears to spiral path in the case of acceleration following. Otherwise, it will appear to be no rules.