系统工程理论与实践
繫統工程理論與實踐
계통공정이론여실천
Systems Engineering—Theory & Practice
2015年
1期
150~159
,共null页
交通信号控制 简单二维元胞传输模型 元胞表示 多相位交通信号 排队 微观评价
交通信號控製 簡單二維元胞傳輸模型 元胞錶示 多相位交通信號 排隊 微觀評價
교통신호공제 간단이유원포전수모형 원포표시 다상위교통신호 배대 미관평개
traffic signal control; simple two-dimensional cell transmission model; cell representation;multiphase signal; queue; microscopic evaluation
一维元胞传输模型无法描述多相位信号控制交叉口上不同方向车辆排队的形成与消散过程,本文建立适用于多相位信号控制交叉口的简单二维元胞传输模型.提出交叉口和连线的简单二维元胞表示方案从微观层面描述交叉口进口道上不同方向的车辆排队,基于Daganzo的元胞传输模型建立简单二维元胞传输模型描述交通流在路段和交叉口上的运行与演化规律.在此基础上,在元胞层面建立信号控制方案评价指标的实时估计模型.算例分析表明,二维元胞表示方案优于一维元胞表示方案,简单二维元胞传输模型的估计精度高于一维元胞传输模型,并且简单二维传输模型能够适用于过饱和交通流.本文建立的简单二维元胞传输模型可用于路网信号控制方案的微观评价.
一維元胞傳輸模型無法描述多相位信號控製交扠口上不同方嚮車輛排隊的形成與消散過程,本文建立適用于多相位信號控製交扠口的簡單二維元胞傳輸模型.提齣交扠口和連線的簡單二維元胞錶示方案從微觀層麵描述交扠口進口道上不同方嚮的車輛排隊,基于Daganzo的元胞傳輸模型建立簡單二維元胞傳輸模型描述交通流在路段和交扠口上的運行與縯化規律.在此基礎上,在元胞層麵建立信號控製方案評價指標的實時估計模型.算例分析錶明,二維元胞錶示方案優于一維元胞錶示方案,簡單二維元胞傳輸模型的估計精度高于一維元胞傳輸模型,併且簡單二維傳輸模型能夠適用于過飽和交通流.本文建立的簡單二維元胞傳輸模型可用于路網信號控製方案的微觀評價.
일유원포전수모형무법묘술다상위신호공제교차구상불동방향차량배대적형성여소산과정,본문건립괄용우다상위신호공제교차구적간단이유원포전수모형.제출교차구화련선적간단이유원포표시방안종미관층면묘술교차구진구도상불동방향적차량배대,기우Daganzo적원포전수모형건립간단이유원포전수모형묘술교통류재로단화교차구상적운행여연화규률.재차기출상,재원포층면건립신호공제방안평개지표적실시고계모형.산례분석표명,이유원포표시방안우우일유원포표시방안,간단이유원포전수모형적고계정도고우일유원포전수모형,병차간단이유전수모형능구괄용우과포화교통류.본문건립적간단이유원포전수모형가용우로망신호공제방안적미관평개.
The one-dimensional cell transmission model cannot depict different queue formations and dissi- pations at a multiphase signal controlled intersection. To separately depict vehicle queues at a multiphase- signalized intersection at microscopic level, a set of simple two-dimensional cell transmission logics on a link and at a signalized intersection is put forward. To properly represent the traffic dynamics at a multi- phase signal controlled intersection, a simple two-dimensional cell transmission model is derived from the proposed logics based on Daganzo's cell transmission model. Finally, a series of models are put forward at cell level to dynamically estimate performance indexes of a traffic signal. Case studies show that the simple two-dimensional cell representation is better than the one-dimensional cell representation in that the estimation accuracy of the simple two-dimensional cell transmission model is higher than that of the one-dimensional cell transmission model, and that the simple two-dimensional cell transmission model can accurately represent traffic dynamics under saturated conditions. The proposed model can be used to evaluate the coordinated traffic signals.