traffic flow model 中文意思是什麼

traffic flow model 解釋
交通漢模型
  • traffic : n 1 交通,(人、車、船、飛機的)來往;交通量;運輸;運輸量;運輸業;旅客,貨物。2 交易,貿易 (in...
  • flow : vi 1 流,流動。2 (血液等)流通,循環。3 流過;川流不息;(時間)飛逝;(言語等)流暢。4 (衣服、...
  • model : n 1 模型,雛型;原型;設計圖;模範;(畫家、雕刻家的)模特兒;樣板。2 典型,模範。3 (女服裝店僱...
  1. The simulation model for traffic flow was discussed initially by analyzing the characteristic of the traffic flow in urban express highway

    在分析城市快速道路交通流特徵的基礎上,對交通流模擬模型進行了初步探討。
  2. Integral calculus method for establishing traffic flow model

    交通流的積分建模方法
  3. Abstract : in the 1d random traffic flow model, the relationbe tween the correlation functions and the creation, disappearance, brake probabiliti es ofthe vehicles is presented, according to the statistical mechanical approach to thecorrelation functions. and then comes out the results cohering with the c omputersimulation

    文摘:依據概率論的定義,通過對關聯函數的解耦,給出兩點的關聯函數與轉入、轉出及剎車概率之間的關系,並對其結果進行了討論,計算機數值模擬結果與理論結果一致
  4. In the fourth chapter, we consider the effect of bus stations on traffic flow. by numerical simulations, we attain the idea results. in the fifth chapter, a multi - speed ca traffic flow model on the one - dimen - sional urban main road on the control of traffic lights is proposed to simulate the traffic under the open boundary conditions

    最後,建立一個交通燈控制下城市主幹道單車道多速元胞自動機交通流模型來模擬在開放性邊界條件下現實城市主幹道交通的車流運動,通過延遲來調整交通中紅綠燈對主幹道車流量的控制,並研究了在交通燈延遲控制下綠信比、交通燈個數對主幹道交通流的影響。
  5. Linear model based expressway traffic - flow wave analysis on the influence of traffic incidents and intervention process

    基於線性模型的高速公路交通事件和干預作用影響下的車流波分析
  6. The continuum equation and kinematics differential equation composed the dynamic model of mixed traffic flow

    連續性方程和運動微分方程構成了混合交通流的動力學模型。
  7. When the model is applied to traffic flow without overtaking flow, the flow - density relationship is obtained

    將模型應用於無超車換道交通流,求出了流量和密度之間的關系。
  8. The traffic flow model can fully exert agent ' s autonomy and cooperation to show the complicated trait of mixed - traffic

    所提出的交通流模型能夠充分發揮智能體的自治性和相互協作性,體現我國城域混合交通流的復雜性特點。
  9. A distributed mixed - traffic flow model based on techniques of multi - agent systems is designed and a framework of urban mixed - traffic simulation system is proposed

    摘要以多智能體技術為手段,結合我國混合交通流的組成和復雜性特徵,建立了一種分散式混合交通流模型,並提出了基於多智能體的城域混合交通模擬系統的體系結構。
  10. Based on these models, a main - road traffic flow model with two speeds on one dimension is designed. this model simulate the situation of one road in the city, traffic lights placed on the crossing, using the computer simulation, firstly, in the case of synchronized traffic lights, we investigated the velocity and flow of the model when the initial density, the turning probabilities, the number of the traffic lights, the green to signal ratio and the period of the signal are changed, then we have advanced some meliorate measure to traffic flow ; secondly, in the case of the traffic lights " signal update delay in turn, we found the optimal matching between the period of the signal and the delay time of the traffic lights so as to the perfect velocity and the flow of the model are attained

    在此基礎上,建立了一維二速主幹道模型,該模型模擬了城市交通中一條主幹道的交通情況,在交叉口處設置紅綠燈,通過計算機模擬,首先,在交通燈信號同步更新的條件下,研究模型在改變車輛的初始密度、轉向概率、交通燈個數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下主幹道的速度、流量的變化,根據模擬結果提出一些改善交通的有效措施;其次,在交通燈信號依次延遲更新的條件下,研究模型在參數道路長、紅綠燈綠信比、交通燈個數、車輛的初始密度給定的情況下找到紅綠燈信號周期和延遲時間的最佳匹配使得主幹道的速度、流量達到最理想的值。
  11. From the viewpoint of macro dynamic characteristics of freeway traffic flow, this paper classifies the freeway, gives a nonlinear macro dynamic traffic flow model of freeway using density and speed as state variables and then identifies the parameters by using searching approach step by step, finally gives an identification instance

    摘要從高速公路交通流的宏觀特性和動態特性出發,對高速公路進行了兩級分段,以車流密度和車流速度作為狀態變量,給出了高速公路非線性的宏觀動態交通流模型,進而採用直接搜索法對模型中的參數進行了分段辨識,並給出了辨識實例。
  12. First, the recent studies of ca models for traffic flow, based on the statistical physics, are introduced in the thesis. at the same time, all kinds of models based on the determined ca are also introduced in detail. second, we introduce the improved ns model presented by xueyu to the ca traffic flow model of a two - lane roadway in a highway and on a urban main road

    本文首先綜述了各種交通流模型,在簡單介紹了元胞自動機及其理論的基礎上,重點介紹了元胞自動機交通流模型,並在此基礎上,對薛郁提出改進的ns模型加以應用和推廣到雙車道高速公路交通流模型和城市主幹道交通流模型中。
  13. Secondllv in the 1 d random traffic flow model. the relation function between the correlation and the creation. disappearance. brake probabilities of the vehicles is presented. according to the statistical mechanical approach to the spatial correlation functions. the theoretical results agree with that of the computer simulation. thirdh. based on the bml model. a main - road traffic flow model with two speeds on two dimensions is designed. this model simulate the traffic situation of one main road and several branches in the cit traffic lights placed on the crossing. vehicles breaking ~ vhile running and turning to other direction while jamming. we investigate the ~ ' e1ocitv and flo ~ ~ of the model when the initial densitvthe brake and turning probabilities. the green to signal rati3. thc number of the branches and the period of the signal are changed. then the reasons causing all the kinds of phenomena are analvzed. finallv. we simulate the bml model using the method of lattice boltzmann which ~ vas brought out by liu mu - renand obtain the velocity - density graph similar to the previous result. the upper critical densiw above which there are oniv jamming configurations. and the lo ~ ver critical density below which there are only moving configurations are the same as before. the boltzmann function which is on the lattices shows the moving and jaxmning transition obviouslv. thus it proves the possibilit of this method on the traffic research

    接著,建立了和研究了二維二速的主幹道模型,該模型模擬了城市交通中一條主幹道,多條支道的交通情況,在幹道與支道的交叉路口設置紅綠燈,車輛在運行中可以有對突發事件發生反應的剎車,在發生堵塞時,路口的車輛可考慮通過轉向來緩解交通等各種實際情況的發生,給出了車輛演化的演化方程,並通過計算機模擬,研究模型在改變車輛的初始密度、剎車概率、轉向概率、支道數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下支、主幹道車輛的速度、流量的變化,並分析在各種情況下交通狀況的成因,提出改善交通的有效措施。最後,在劉慕仁提出的用格子boltzmann方法研究一維決定論交通流的思路下,將此法推廣到對二維bml模型的模擬上,得到了與用以往方法的研究結果相類似的速度-密度圖線,且車輛從運動相到堵塞相轉變的上下臨界密度是一致的,同時分別給出車輛在處于暢通相和堵塞相時, boltzmann函數在格子上的分佈情況,進一步驗證了此法的可行性。
  14. The overview of green - wave model, braking effect and steering probability effect were generalized on the basis of the existing research on cellular automata traffic flow model. the affection of many factors to be considered in the practical traffic system was summarized

    在已有的交通流元胞自動機模型研究的基礎上,對二維模型中的綠波模型、剎車效應和轉向概率效應進行了綜述,總結了在實際的交通系統中需要考慮諸多因素的影響。
  15. This method does not need an upper supervision level which is widely used in traditional area traffic control. it is a potentially instructive urban area traffic control method which needs no traffic flow model and only limited communication volume among different traffic intersection controllers. 3

    基於分散式q學習的區域交通協調控制擺脫了一般的帶上層監控的遞階控制模式,無需預先了解交通流模型,各交叉路口控制器之間所需的通信量很少,是一種具有一定潛力的城市交叉路口組協調控制方式。
  16. The open - boundary cellular automata traffic flow model in accordance with the practice was raised and simulated numerically on the basis of bml model

    在bml模型的基礎上,提出了符合實際情況的開放邊界交通流模型並對其進行了數值模擬分析。
  17. In forth chapter, several difference methods that are suitable for solution of quasilinear equation are presented, namely, one step lax - wendroff scheme, two step lax - wendroff scheme, mac cormark scheme, tvd scheme, harten tvd scheme with two - order precision. all of them are applied to simulate the same traffic - flow question and choose the best scheme under the consideration of their results. in fifth chap ter, power function traffic - flow model and harten tvd scheme with two - order precision are applied to simulate red - green signal traffic - flow, including isolated, synchronous and synchronous changing red - green signal case

    在第4章中,給出了適于求解擬線性方程的幾種差分格式,即一步lax - wendroff格式、二步lax - wendroff格式、 maccormark格式、一階tvd格式、 harten二階tvd格式,並用上述5種格式對同一簡單的交通流問題進行了數值模擬,利用數值結果,篩選出最適合求解具有強間斷特性的交通流問題harten二階tvd格式。
  18. The residual signals will be gotten from the comparison between the actual and prediction states. use a som neural networks as a classifier to classify characteristics contained in the residuals. so, we can detect whether the traffic incident has happened. this algorithm can detect not only whether the traffic incident has happened but also the level of accidental congestion caused by the traffic incident the second is another freeway traffic incident detection novel algorithm based on art2 neural networks. this algorithm uses the freeway traffic flow model and art2 neural networks as observer and classifier, respectively. the residual signals will be gotten from the comparison between the actual and estimated value of observer. use the art2 neural networks to classify characteristics contained in the residuals. so. we can detect whether the traffic incident has happened. this algorithm can recognize new pattern at the same ti

    第二種是基於ar咒神經網路的檢測高速公路交通事件的新演算法。該演算法利用高速公路交通流模型和artz神經網路分別作觀測器和分類器,觀測器估計的數據和實際交通數據進行比較,得到殘差序列;利用artz神經網路對殘差序列進行分類,以區分不同交通狀態下的交通信息,達到檢測交通事件的目的。本演算法不但可以識別已知的交通事件類型,還可以識別未知的或從未出現過的交通事件類型,是一個可以邊工作、邊學習的檢測系統。
  19. First of all, we have established models of microcosmic traffic flow, such as : car _ send out model, car _ dynamical model, following model, changing driveway model, queuing model, toll station model, adding and diverting traffic flow model, car _ arriving model, model of basic road, net of road model, etc. then i have programmed modules of all models, and determined the method of system simulation

    本文主要立足與高速公路微觀交通流模擬系統的建模與實現,首先確立微觀交通流各模擬模型,如:發車模型,車輛運動模型,跟馳模型,換車道模型,排隊模型,收費站模型,匝道合流與分流模型,車輛到達消失模型,基本道路模型,路網模擬模型等。然後編制各模型的實現模塊,確定系統的模擬方法。
  20. The urban traffic coordination control arithmetic based on distributed q - learning doesn ’ t need an upper supervision level which is widely used in traditional urban traffic control. it is a kind of potentially instructive urban traffic coordination control mode which doesn ’ t need traffic flow model and the

    基於分散式q學習的區域交通信號控制系統擺脫了一般上層監控的遞階控制模式,無需預先了解交通流模型,各交叉口之間的通信量少,是一種具有一定潛力的區域交通信號協調控制模式。
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