car-following theory 中文意思是什麼
car-following theory
解釋
車輛跟隨理論-
In recent years, plentiful and substantial fruits achieved by the lb method in simulations of hydraulics, multiphase flows, flows in porous media and heat transfer as well as magnetohydrodynamics, have revealed a broad perspective of application of this method, it will become a powerful competitor to the conventional approaches. in order to absorb the recent achievement in theory and application of the lb method, explore new ways in hydraulic computation to promote the development of practice, some work is car ried out in this thesis, as following : advances in the theory research and application, deductive process of the d2q9 model and some other commonly used models of the lb method are summarized. based on the hydrodynamic and general boundary conditions, a new joint boundary condition is presented, it integrates advantage of the two conditions above and obtains very good results in dealing with all kinds of boundaries of flow fields
為了消化和吸收近年來lb方法在理論和應用方面的新成果，探索在水力計算方面的新途徑以促進lb方法實用化的發展，本文進行了下列研究工作：綜述了lb方法在理論研究和實際應用方面的新進展，以及d2q9模型的推導過程和其他一些常用的模型；在水動力邊界條件和通用邊界條件的基礎上提出了一種新的聯合邊界條件方法，它綜合了上述兩種邊界條件的優點，在流場的各種邊界處理中取得了非常好的效果，經過模塊化的處理以後這種邊界條件具有更好的實用性；針對均勻網格的lb方法計算效率較低的不足，提出了雙重網格的latticeboltzmann方法，通過二維poiseulle流動、后臺階流動和渠道方槽流動三個算例的模擬，證明這種方法能夠明顯地提高流場模擬的計算效率；此外，根據復雜區域流場的特徵提出了latticeboltzmann方法的分塊-耦合演算法，利用lb方法的計算特性實現塊與塊之間的數據交換，充分利用計算資源提高計算效率，通過對「 t 」型、 「十」型和「 x 」型分岔管道流場的模擬，展示了這種演算法的特徵和優點，以及它所具有的應用前景。 -
A variable time - headway car following model was presented based on time - headway distributing rule in actual traffic and one dimensional cellular automaton modeling theory
摘要依據不間斷車流的車頭時距分佈規律和一維元胞自動機建模理論，提出了一種可變時距跟車模型。 -
Input variables and output variable is decided according to study of car - following theory. then car - following models based on bp and rbf neural network are designed and trained
根據對跟馳理論的研究，確定神經網路的輸入、輸出變量，並分別建立基於bp網路和徑向基網路的跟馳模型。 -
These tasks are termed psychomotor skills or perceptual - motor skills because they require a continued motor response to a continuous series of stimuli. car - following theory, is one of the basal traffic flow theory, has being researched since 1950 ' s in the world. although many models had been put into practice, because of existing defect in each model, and difference of local traffic flow characteristics, there was not one model can be accepted widely
車輛跟馳理論作為最基礎的交通流理論分支，國外在這方面的研究已經持續了半個多世紀，盡管現有的許多跟車模型已經應用於實踐，但由於每個模型都存在或多或少的不足，以及各地交通流特性的差異，導致目前尚未有被普遍接受的跟車模型。 -
On the basis of reviewing the field in car following in the world, the disadvantage of time series data of car following in existing research was found in this dissertation. the direction of research breakthrough were : high precision car following field data collecting methodology without jamming, the index and methodology of classing the car following phase in expressway, constructing car following model uniform with randomicity and orderliness, train of thoughts and technology route were : starting off practice, depending on high precision instrument to collect car following data, exercising scientific theory methodology, combining with computer simulation
文章在認真分析國內外車輛跟馳理論領域研究的基礎上，綜合評述已有的成果，發現已有的研究缺乏描述跟車行為的時間序列數據，針對跟車模型存在的問題，選定研究的突破方向為：無人為干擾的高精度車輛跟馳實測數據採集方法、在實測數據基礎上，定性與定量相結合，確定快速路車輛行駛狀態指標及其種類劃分的方法、建立隨機性與規律性相統一的車輛跟馳模型。 -
Then the technology route of this study is confirmed : on the base of practice, depending on high precision instrument to collect car following data, exercising scientific theory methodology, combining with computer simulation
確定了從「實際應用出發，依靠高新設備採集跟車數據，運用科學的理論方法，結合計算機模擬技術」的技術路線。
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