面向车路协同的交叉口车速控制方法

Vehicle-Road Coordination-Oriented Vehicle Speed Control Method at Intersection

为了使车辆能够安全、顺畅、连续、节能地通过交叉口,减轻城市道路上信号交叉口对交通流的阻断,针对车路协同环境下车辆可以与控制系统实时信息交互的特征,实现互联交通控制的智能化。文章首先提出了一种交叉口附近的车速控制方法,该方法融合车辆行驶信息、信号灯信息和交叉口路况信息,通过计算得到一个能够使车辆连续、顺畅的通过下游交叉口的引导车速。同时,为了考虑驾驶人的心理因素和乘客的舒适度,引入三角函数增长曲线来表示驾驶时加速/减速中车速的变化,并用GPS实时导航APP推送给驾驶员,驾驶员可酌情参考该推荐速度行驶。为了验证此车速控制策略的有效性,通过仿真模拟,对有速度控制策略和无速度控制下车辆通过交叉口的行程时间、燃油消耗进行分析对比。仿真结果表明,在车路协同的环境下车速引导的车辆通过交叉口的行程时间缩短,燃油消耗量也显著较少。在此控制策略模型下,减少了车辆的停车次数,一定程度上降低了碳污染物排放量。

In order to enable the vehicle to pass through the intersection safely,smoothly,continuously and energy-saving,the traffic intersection of the signalized intersection on the urban road is alleviated,and the vehicle can interact with the real-time information of the control system in the vehicle-coordinated environment to realize the interconnection traffic intelligent control.This paper designs a vehicle speed control strategy for the intersection.This strategy combines the current vehicle driving information,the front signal information,and the intersection traffic information to calculate a continuous and smooth cross-passing through the proposed intersection control strategy.The guiding speed of the mouth.At the same time,in order to consider the psychological factors of the driver and the comfort of the passenger,a trigonometric function growth curve is introduced to indicate the change of the vehicle speed during acceleration/deceleration during driving,and is pushed to the driver by the GPS real-time navigation APP,and the driver can refer to the recommended speed as appropriate.In order to verify the effectiveness of this speed control strategy,through simulation and simulation,the travel time and fuel consumption of the vehicle passing through the intersection with speed control strategy and no speed control are analyzed and compared.The simulation results show that the travel time of the vehicle guided by the vehicle speed through the intersection is shortened and the fuel consumption is also significantly less.Under this control strategy model,the number of vehicle stops is reduced,and the carbon pollutant emissions are reduced to some extent.