期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
基于模糊神经网络的智能交通信号控制设计 被引量:4
1
作者 潘晶莹 《微型电脑应用》 2018年第12期87-89,共3页
为了解决当前城市交通拥堵问题,采用更加智能化的控制方法提高城市交通信号控制效率是当前计算机应用实践的重点。根据模糊控制的原理,引入神经网络在自学习方面的优势,提出了一种基于模糊神经网络的智能交通信号控制方法,以车辆排队长... 为了解决当前城市交通拥堵问题,采用更加智能化的控制方法提高城市交通信号控制效率是当前计算机应用实践的重点。根据模糊控制的原理,引入神经网络在自学习方面的优势,提出了一种基于模糊神经网络的智能交通信号控制方法,以车辆排队长度和当前信号周期作为输入,以信号周期内的信号周期增量作为输出,通过模糊控制规则,进而完成对信号周期的实时动态控制,并及时调整交通信号灯相位差。通过MATLAB软件对上述方案进行仿真,验证了方案的可行性,为当前城市车辆交通控制提供了一种可行方案。 展开更多
关键词 模糊控制 BP神经网络 车辆交通信号 相位差 仿真
下载PDF
Vehicle actuation based short-term traffic flow prediction model for signalized intersections 被引量:8
2
作者 SUN Jian ZHANG Lun 《Journal of Central South University》 SCIE EI CAS 2012年第1期287-298,共12页
Traffic flow prediction is an important component for real-time traffic-adaptive signal control in urban arterial networks.By exploring available detector and signal controller information from neighboring intersectio... Traffic flow prediction is an important component for real-time traffic-adaptive signal control in urban arterial networks.By exploring available detector and signal controller information from neighboring intersections,a dynamic data-driven flow prediction model was developed.The model consists of two prediction components based on the signal states(red or green) for each movement at an upstream intersection.The characteristics of each signal state were carefully examined and the corresponding travel time from the upstream intersection to the approach in question at the downstream intersection was predicted.With an online turning proportion estimation method,along with the predicted travel times,the anticipated vehicle arrivals can be forecasted at the downstream intersection.The model performance was tested at a set of two signalized intersections located in the city of Gainesville,Florida,USA,using the CORSIM microscopic simulation package.Analysis results show that the model agrees well with empirical arrival data measured at 10 s intervals within an acceptable range of 10%-20%,and show a normal distribution.It is reasonably believed that the model has potential applicability for use in truly proactive real-time traffic adaptive signal control systems. 展开更多
关键词 adaptive signal control least-squared estimation microscopic simulation travel flow prediction urban arterials
下载PDF
Dynamic signal control for at-grade intersections under preliminary autonomous vehicle environment 被引量:3
3
作者 LUO Si-da ZHANG Shuai 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第4期893-904,共12页
Autonomous vehicle technology will transform fundamentally urban traffic systems.To better enhance the coming era of connected and autonomous vehicles,effective control strategies that interact wisely with these intel... Autonomous vehicle technology will transform fundamentally urban traffic systems.To better enhance the coming era of connected and autonomous vehicles,effective control strategies that interact wisely with these intelligent vehicles for signalized at-grade intersections are indispensable.Vehicle-to-infrastructure communication technology offers unprecedented clues to reduce the delay at signalized intersections by innovative information-based control strategies.This paper proposes a new dynamic control strategy for signalized intersections with vehicle-to-signal information.The proposed strategy is called periodic vehicle holding(PVH)strategy while the traffic signal can provide information for the vehicles that are approaching an intersection.Under preliminary autonomous vehicle(PAV)environment,left-turning and through-moving vehicles will be sorted based on different information they receive.The paper shows how PVH reorganizes traffic to increase the capacity of an intersection without causing severe spillback to the upstream intersection.Results show that PVH can reduce the delay by approximately 15%at a signalized intersection under relatively high traffic demand. 展开更多
关键词 dynamic traffic control vehicle-to-signal signalized intersection preliminary autonomous vehicle environment
下载PDF
Delay Analysis and Formulation Inference of Signalized Intersection for Traffic Congestion Conditions
4
作者 刘广萍 丁建梅 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2004年第2期160-163,共4页
Vehicle delay is an important measure to evaluate the signal timings of signalized intersections.When optimization the signal control parameters, delays of vehicles from all approach directions of an intersection shou... Vehicle delay is an important measure to evaluate the signal timings of signalized intersections.When optimization the signal control parameters, delays of vehicles from all approach directions of an intersection should be considered. Based on the analysis of the vehicle delay on an approach of intersection, directed against the typical condition of a congested intersection-over-saturated condition, the paper has analyzed and inferred the intersection delay dynamic formulation, and has established the relation between intersection delay,the signal timings, vehicle arrival rate and the queue lengths, and that provides useful information for understanding vehicle delay of signalized intersection and for establishing performance index function of signal timing optimization. 展开更多
关键词 TRAFFIC SIGNAL control DELAY
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部