面向长周期的交通状态反馈诱导策略  

Traffic state feedback guidance strategy under long update intervals

作　　者：贺正冰[1] 关伟[1] 

机构地区：[1]北京交通大学交通运输学院,北京100044

出　　处：《控制与决策》2013年第7期1046-1050,共5页Control and Decision

基　　金：国家重点基础研究发展计划课题(2012CB725403);国家自然科学基金重点项目(71131001);中央高校基本科研业务费项目(2012JBM064)

摘　　要：受检测器和诱导信息板显示形式的限制,诱导信息更新周期通常较长.为此,根据备选路径交通状态而非行驶时间制定诱导策略,利用交通状态相对稳定的特点,进一步提出状态反馈诱导策略;为减少长周期与时变交通需求间的矛盾及其他误差,提出了状态与时间反馈策略相结合的混合策略.仿真实验表明,面对长周期时,状态反馈策略可以满足稳定性和准确性的双重要求,混合策略则进一步提高了诱导的准确性.Update intervals for guidance strategies used in variable message signs have to be long due to limitations of detectors and display format of broadcasting guidance information.A guidance strategy is introduced based on the traffic state instead of travel time.A traffic state feedback guidance strategy is obtained by utilizing relative stability of traffic state.A hybrid strategy considering travel time and traffic state is proposed as a solution of conflict between time-varying demand and long intervals.Simulation results show that the traffic state feedback strategy is able to meet the practical requirement both in the stability and accuracy under long update intervals,and the hybrid strategy further improves the accuracy.

关 键 词：诱导策略 交通状态 反馈策略 长诱导周期 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]