单交叉口交通流的智能控制  

Intelligent Control of Traffic Flow at a Single Intersection

作　　者：高辉[1] 苏诗琳[1] 

机构地区：[1]长安大学信息工程学院,西安710064

出　　处：《交通运输工程与信息学报》2007年第3期106-111,共6页Journal of Transportation Engineering and Information

摘　　要：目前,我国大多数城市交通趋于饱和,对城市交叉口信号优化控制是缓解目前交通现状的有效方案。根据城市交叉口交通流的特点,本文提出一种新的智能控制方法。判断交叉口的交通强度,选择定时控制或自适应模糊控制。在自适应模糊控制中,考虑到非机动车辆的影响,根据各相位排队长度,确定绿灯相位的延时时间和下一个最佳绿灯相位。在绿灯延时期间,通过自适应模块实时输出的延时校正量确定最佳延时时间。仿真结果表明,此方法能够有效地降低车辆平均延误。At present, the traffic of many cities in our country is becoming saturated. It is an effective method to control the signals at the urban road intersection for alleviating the present traffic situation. Based on the traffic flow characteristics of urban road intersection, a new intelligent control method is presented. Time control or adaptive control were chosen by judging the traffic intensity at the intersection. In the adaptive fuzzy control, the delay time of the green phase and the next best one were on the base of the infection of the non-vehicle and the length of every phase queue. During ascertained the delay of green phase, the best delay time were determined by＇delay emendation which was output by adaptive module. The simulation result shows that the method can effectively lower the vehicle average delay.

关 键 词：交通流 模糊控制 实时控制 平均延误 城市交通信号控制 

分 类 号：U491.54[交通运输工程—交通运输规划与管理]