基于OD预测信息的高速公路优化控制系统设计与仿真  

A Design with Simulation of Optimal Control System on Freeway Based on OD Prediction

作　　者：江竹[1] 李树彬[2] 黄永宣[1] 

机构地区：[1]西安交通大学电子与信息工程学院,西安710049 [2]山东省科学院自动化研究所,济南250014

出　　处：《交通运输系统工程与信息》2008年第1期55-60,共6页Journal of Transportation Systems Engineering and Information Technology

基　　金：国家自然科学基金项目(60504025);山东省科学院重点科研计划项目(200688)

摘　　要：根据时变的OD预测信息,基于分层递阶的思想,建立了一个新颖的高速公路优化控制系统.控制结构分为三层:网络负荷分配层对长时期内总的交通需求进行预测,提前确定将来排队长度的上界;全局最优控制层预测未来的交通状态,为路网中的各个匝道建立协调约束;局部反馈控制层根据实测的交通条件及全局最优控制层的寻优结果决定匝道调节率.仿真结果表明,控制系统具有良好的动态性能,协调了各个匝道之间的利益,实现了高速路网整体性能的优化.According to the information of real-time OD prediction, a novel hierarchical optima/control system on freeway is proposed based on the hierarchy idea. There are three control layers in this control architecture. First, network load assignment layer predicts in advance the total traffic demands in a long time, and makes the upper bound of the future queue length. Secondly, the area-wide optimal control layer predicts the future traffic state and builds the harmonious restrictions for each ramp. Thirdly, the local feedback control layer adjusts model parameters according to the real-time traffic conditions and the results optimized by the area-wide optimal control layer. The simulation results show that the control system is of good dynamic performance. It harmonizes the benefits of every ramp and optimizes the whole performance of the freeway network.

关 键 词：高速公路 OD矩阵预测 分层递阶优化控制 全局最优控制 局部反馈控制 

分 类 号：U491[交通运输工程—交通运输规划与管理]