[1]丁恒,杨涛,郑小燕,等.交通拥堵区边界入口可拓提升控制[J].东南大学学报(自然科学版),2019,49(4):781-787.[doi:10.3969/j.issn.1001-0505.2019.04.023]
 Ding Heng,Yang Tao,Zheng Xiaoyan,et al.Extension lifting control for boundary entrance of traffic congested area[J].Journal of Southeast University (Natural Science Edition),2019,49(4):781-787.[doi:10.3969/j.issn.1001-0505.2019.04.023]
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交通拥堵区边界入口可拓提升控制()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第4期
页码:
781-787
栏目:
交通运输工程
出版日期:
2019-07-20

文章信息/Info

Title:
Extension lifting control for boundary entrance of traffic congested area
作者:
丁恒杨涛郑小燕张卫华张雨
合肥工业大学汽车与交通工程学院, 合肥 230009
Author(s):
Ding Heng Yang Tao Zheng Xiaoyan Zhang Weihua Zhang Yu
School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei 230009, China
关键词:
交通工程 边界控制 可拓提升控制 PI控制 宏观基本图
Keywords:
traffic engineering boundary control extension lifting control proportional integral(PI)control macroscopic fundamental diagram
分类号:
U491.4
DOI:
10.3969/j.issn.1001-0505.2019.04.023
摘要:
为了改善利用宏观基本图(MFD)规律对拥堵区边界控制的效果,提出了拥堵区边界入口可拓提升控制方法.该方法采用比例积分(PI)控制外部反馈调节路网累计交通量;根据路网流出率的扰动,选取路网实际流出率与MFD曲线对应的期望流出率相对差值为特征变量,建立了关于特征变量的可拓集合,根据关联函数,划分为经典域、可拓域和非域,并设计了内部可拓提升控制器对路网入口边界PI反馈控制量进行调节.以合肥市某区域路网为对象,通过微观仿真,分析可拓提升控制、PI控制和无边界控制3种方案.结果表明:较无边界控制,可拓提升控制可有效控制驶入路网的交通流,避免交通拥堵;相比常规PI控制,可拓提升控制克服了由于路网的随机不稳定的变化对交通状态的影响,使得网络内车辆旅行完成率提高了10.6%,车辆总延误降低了5.6%,并且控制效果比PI控制更加稳定.
Abstract:
In order to improve the control effectiveness of the congested area boundary using macroscopic fundamental diagram(MFD)theory, an extension lifting(EL)control method for the entrance of the congested area is proposed. The method employs the external proportional integral(PI)feedback control to regulate the accumulation of the vehicles. Then, according to the disturbance of road network outflow rate, the relative error between the actual outflow rate of the road network and the expected outflow rate of MFD curve is selected as the characteristic variable, and the extension set is established which can be divided into classical domain, extension domain and non-domain according to the correlation function. Furthermore, an internal extension controller is designed for regulating PI feedback control variables of the entrance boundary of road networks. Taking a regional network in Hefei city as the object, three control schemes including the EL control, the PI control and no-boundary control are analyzed by microscopic simulations. The results show that the EL control effectively controls the traffic flow into the network and avoids the traffic jam in comparison with no-boundary control. Compared with the conventional PI control, the EL control overcomes the influence of the stochastic unstable change of the road network under the traffic condition. Thus, the vehicle completion rate is increased by 10.6% and the vehicle total delay is reduced by 5.6% in the EL control network, and the control effectiveness is more stable than that of the PI control.

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备注/Memo

备注/Memo:
收稿日期: 2019-01-23.
作者简介: 丁恒(1980—),男,博士,副教授,dingheng@hfut.edu.cn.
基金项目: 国家自然科学基金资助项目(61304195, 51878236).
引用本文: 丁恒,杨涛,郑小燕,等.交通拥堵区边界入口可拓提升控制[J].东南大学学报(自然科学版),2019,49(4):781-787. DOI:10.3969/j.issn.1001-0505.2019.04.023.
更新日期/Last Update: 2019-07-20