高速公路交通流的RBF神经网络建模  

Freeway Traffic Flow Modeling with RBF Neural Network

作　　者：欧海涛[1] 张文渊[1] 杨煜普[1] 许晓鸣[1] 

机构地区：[1]上海交通大学自动化系,上海200030

出　　处：《上海交通大学学报》2000年第5期665-668,共4页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目! ( 696740 2 3 )

摘　　要：在对城市高速公路交通流模型深入研究的基础上 ,针对在不同环境以及时变系统中对复杂非线性大系统的控制 ,提出了一种改进的快速 RBF神经网络算法对交通流进行建模 ,克服了传统的数学模型对交通非线性大系统建模时泛化能力差的缺陷 .该算法是采用 APC- 单路径聚类算法确定 RBF神经网络结构参数的一种快速 RBF神经网络算法 ,网络训练速度快 ,效果良好 ,对实现交通流的在线建模与控制有重要意义 .文中进行了计算机仿真研究 。Urban freeway traffic modeling was researched.Based on the analysis,for the dynamic environ- ment and time- dependentsystem,a modified speediness RBF neural network was proposed to model the ki- netic freeway traffic flow.The method overcomes the traditional mathematical modeling's shortcoming, thatis ,one model validated in one area or one time may be inaccurate in anotherarea and/ or anothertime. This method used an APC- single path clustering algorithm to determine the parameters of RBF neural network,and a new speediness RBF neural network algotithm was given.Applied in the traffic flow model- ing of freeway,this neural network's fastlearning ability is very importantto realize on- line modeling and control of traffic flow.Computer simulations were used to demonstrate the effectiveness of the use of RBF neural network to model traffic flow.

关 键 词：高速公路 交通流 RBF神经网络 建模 

分 类 号：U491.112[交通运输工程—交通运输规划与管理] TP18[交通运输工程—道路与铁道工程]