一种改进的自动化高速公路交通流速度控制器设计  

An improved traffic flow-speed control design for an automated highway system

作　　者：杨旭华[1,2] 董颖颖[1] 杨海东[1] 王万良[1] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310032 [2]浙江大学工业控制技术国家重点实验室,浙江杭州310027

出　　处：《控制理论与应用》2009年第1期103-106,共4页Control Theory & Applications

基　　金：国家自然科学基金资助项目(60504027,60874080);中国博士后科学基金资助项目(20060401037)

摘　　要：在自动化高速公路的环境下,针对一种基于非线性积分器Backstepping方法的交通流密度控制器,本文提出一种改进的交通流速度控制器设计方法,选取交通流速度为被控变量,并采用Backstepping方法进行控制器的设计,保证使每个路段的交通流速度以指数形式快速收敛到期望值.与已有的方法相比较,该控制器极大地提高了算法效率,而且无需矩阵的逆运算,可以自动满足系统的可控性条件.仿真结果显示该控制器可以有效地减少道路拥塞,有助于在拥堵的高速公路上实现平滑的交通流.On the basis of the traffic density control design by using the nonlinear integrator-Backstepping method, this paper proposes an improved method for designing the traffic flow-speed control by selecting the traffic flow-speed as the controlled variable and applying the Backstepping method to design the controller for an automated highway system, The controller guarantees the traffic flow-speed at each section to be exponentially convergent to the desired speed. Comparing with the prior methods, this controller is superior in algorithm-efficiency, being free from matrix inversion, and automatically satisfying the controllability condition. Simulations show that this controller effectively reduces the congestion and helps to achieve a smooth traffic flow on a congested highway.

关 键 词：BACKSTEPPING 自动化高速公路 速度控制器 指数收敛 

分 类 号：U495[交通运输工程—交通运输规划与管理] TP273[交通运输工程—道路与铁道工程]