快速路系统反馈控制器设计及算法  

Feedback controller design and algorithm of freeway system

作　　者：谢劲松[1] 韩印[2] 范炳全[1] 干宏程[2] 

机构地区：[1]上海理工大学管理学院,上海200093 [2]上海理工大学城市建设与环境工程学院,上海200093

出　　处：《交通运输工程学报》2008年第4期99-103,共5页Journal of Traffic and Transportation Engineering

基　　金：上海市重点学科建设项目(T0502);上海市科委国际合作研究项目(062107043);上海理工大学博士启动基金项目(X693)

摘　　要：为了提高快速路系统的利用效率,设计了一个反馈控制器,提出了反馈控制器的迭代求解算法,控制器能实时跟踪车辆的密度,并与所期望的密度进行比较,把误差反馈给车辆,通过给车辆发布恰当的速度命令来控制车辆运行,使实际车辆密度收敛于期望密度。仿真计算结果表明:算法取4次迭代时的车辆密度与运行速度最大相对误差为0.32%,平均耗时为0.32 s,因此,设计的控制器使交通流运行趋于平稳,减少了车辆延误,从而提高了系统利用效率。In order to improve the using efficiency of freeway system, a feedback controller was designed and its iterative algorithm was proposed, the controller could track vehicles＇ real-time densities and compare them with the anticipant density, then it sent the errors to the vehicles, and guaranteed the convergence of the real vehicle density to the anticipant density under appropriate speed command followed by vehicles. Simulation result indicates that the maximum relative error of vehicles＇ densities and travel speeds is 0.32~, and the average time consumption is 0.32 s after the fourth iteration of the algorithm, so the controller guarantees the smooth and stable traffic flow, reduces the vehicle＇s delay and increases the efficiency of the system. 3 tabs, 9 figs, 10 refs.

关 键 词：交通控制 快速路系统 反馈控制器设计 算法实现 指数收敛 

分 类 号：U491.1[交通运输工程—交通运输规划与管理]