車流速率 的英文怎麼說

中文拼音 [jūliúsùlǜ]
車流速率 英文
traffic flow velocity
  • 車 : 車名詞1. （中國象棋棋子的一種） chariot, one of the pieces in chinese chess2. （國際象棋棋子的一種） castle; rook
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 車流 : current of traffic
  • 速率 : speed; rate; tempo
  1. The thesis is devoted to exploiting a permanent magnet synchronous machine ( pmsm ) for the parallel hybrid electric vehicle ( phev ). three parts are included as follows : at first, in the electromotor state, the current control strategies of pmsm are determined. giving the elementary method for solving the contradiction between enhancing the pmsm ' s flux - weakening capability in the electromotor state and reducing the pmsm ' s connatural adjustment ratio in the dynamotor state

    本課題的研究工作主要圍繞開發一臺並聯式混合動力電動汽車（ phev ）用永磁同步電機（ pmsm ）展開，所作的工作主要包括以下幾個部分：首先，確立了phev用pmsm電動機運行狀態時的電流控制策略，針對pmsm在電動機運行狀態時提高弱磁擴速能力和在發電機運行狀態時減小固有電壓調整率的相互矛盾，提出了初步的解決方法。
  2. It looks upon water resistant as load, simulate every instance of locomotive running and check its every parameter automatically, then collect and dispose these data of parameters, calculate the power of simulating running of locomotive, which is based on the current, and voltage of host dynamotor. afterward, it can be judged from the working state of locomotive. through experiment and adjust each parameter, it can provide important warrant to the components of locomotive whether they can work normally and credibly

    即以水阻作為負載，模擬機車運行，對機車的主發電動機的電流、電壓和柴油機的轉速等參數進行檢測，並對檢測結果進行處理，計算出模擬機車運行時的功率，並以此為依據，對機車的工作狀念進行判斷，通過水阻試驗，調整有關參數，使機車運行時能發揮所要求的功率和滿足規定的工作特性。
  3. In view of the poor stop accuracy, unstability of climbing at reduced or low speed and over - winding of mine ac lift when power braking is used, a siemens all - numerical rectification device is applied in the braking system of mine lift and its control mechanism and method are described

    針對採用動力制動礦井交流提升機停車準確率差，減速與低速爬行不平穩及產生過卷的問題，將西門子全數字整流裝置應用到提升機制動控制系統，並介紹了該系統的控制原理與方法。
  4. Abstract : in view of the poor stop accuracy, unstability of climbing at reduced or low speed and over - winding of mine ac lift when power braking is used, a siemens all - numerical rectification device is applied in the braking system of mine lift and its control mechanism and method are described

    文摘:針對採用動力制動礦井交流提升機停車準確率差，減速與低速爬行不平穩及產生過卷的問題，將西門子全數字整流裝置應用到提升機制動控制系統，並介紹了該系統的控制原理與方法。
  5. With the help of video detection and recognition methods, we can sample real - timely traffic messages, such as traffic flow, road situation and so on, and get the relative information so as to avoid traffic jam before it happens, on the other hand, to real - time traffic breach detection, video detection and recognition methods is also very effective, especially, it can provide strong evidence for traffic policemen

    通過視頻圖象的檢測與識別，可以對道路的交通流、路況等實時監視，提取交通流信息（車流量、車道佔有率、車速等） ，在交通擁擠未發生時，及時採取措施、疏導交通、防止交通擁擠發生；另一方面，通過視頻圖象的檢測與識別，還可以實時檢測交通違章現象、識別違章車輛的車牌號碼，為公安交通管理部門提供強有力的執法證據。
  6. A new vehicle power split continuously variable transmission system ( pscvt ) is presented in this paper. the system consists of a variable pulley set, a planetary train, two electromagnetic clutches, a electromagnetic brake etc. electromagnetic clutches and brake are controlled by ecu

    針對微型汽車，本文提出了一套功率分流式汽車無級變速系統，系統由一組可變帶輪半徑的帶式無級變速裝置和一組行星輪系、離合器及電子控制單元等組成。
  7. Furthermore, we are increasing the number of service centres, branches and mobile service vans so that we can service our customers faster and more efficiently, " said lee

    "我們已增加服務中心，分行及流動貨車服務的數量，以為顧客提供快速和高效率的服務。
  8. While speaking highly of railway ' s achievement since the 16th cpc national congress, chairman jia noted that the chinese people have built the world ' s top - notch qtr line while relying on our own strength, and chinese railway people have developed and manufactured 200km / h and 300km / h emu trains and high horse - power locomotives through introduction, digestion, absorption and re - innovation, thus making a major contribution to the building of an innovation - oriented country

    他對黨的十六大以來鐵路工作取得的成績給予充分肯定，指出，中國人依靠自己的力量，建設了具有世界一流水平的青藏鐵路；通過引進消化吸收再創新，設計製造了達到世界先進水平的時速200公里、 300公里動車組和大功率機車，中國鐵路為建設創新型國家作出了巨大貢獻。
  9. Aerobic exercise is any exercise that raises your heart rate to the extent that it makes you slightly breathless and sweaty eg fast walking, jogging or cycling. aerobic literally means with oxygen

    帶氧運動是指任何能增加您的心跳率以令您有少許喘氣流汗的運動，例如急速步行、緩步跑或踏單車。
  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. Computer fluid dynamics ( cfd ) is adopted to simulate the flow fields of catalytic converter while researching the working process of emission postprocessor. the velocity field and pressure field of exhaust gas are obtained. methods of structural optimization of catalytic converter for improving gas flow and conversion efficiency are proposed

    本文在汽車排氣后處理裝置工作過程研究方面，運用計算流體動力學軟體，對催化轉化裝置氣流場開展了模擬，得出了氣體速度場和壓力場的分佈情況，提出了以改善氣體流動和催化轉化效率的催化轉化裝置結構優化的方案。
  12. Under the test conditions of ud = 2800v and 350hz switching frequency, the current in three phase inverting test reached to loooar. m. s, which can fully meet the requirements of 350km / h emu with 2600v link voltage and 950ar

    在中間直流環節電壓u _ d = 2800v ，開關頻率為350hz的條件下，逆變的試驗電流達到了1000ar . m . s ，完全能夠滿足350km h高速動車組對變流器中間電壓2600v 、輸出電流為950ar . m . s的要求，表明了地面試驗機組的研究獲得了成功。
  13. We also analyze the influence of the boundary condition 、 safety distance and deceleration probability to the traffic flow. finally, we propose an crossroad modle. this model is made up of one main road and one branches ： traffic with lights placed on the crossing, vehicles " breaking while running and turning to other direction while jamming. we investigate the velocity and flow of the model when the initial density, the brake and turning probabilities, the green to signal ratio are changed. then the reasons causing all the kinds of phenomena are analyzed

    最後研究了周期性邊界條件下的十字路口的ca模型，該模型由一條主幹道和一條支道組成，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中對突發事件發生反應的剎車，路口的車輛可以轉向等各種實際交通行為，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、紅綠燈信號的綠信比等各種情況下支、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。
  14. 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。
  15. Based on the comprehensive analysis of the road traffic flow ' s characteristics due to the bus stop without bus bay, the multivariate linear models of the speed and the headway are formed with the variables of the stop frequency, the stop time, the overall length of the stop and its reserve time of the bus and the vehicle flow applying the software of excel, and then the strict mathematical checks are made

    文章首先比較全面地分析非港灣式公交停車影響下道路交通流特徵，然後藉助于excel軟體，構建關于公交停車頻率、公交停車時間、最大公交停車長度及其存在時間、道路流量的車速和車頭時距多元線性模型，並進行了嚴格的數學檢驗。
  16. When the motorcycle is braking or slowing down, the kinetic and / or potential energy is fed back to the battery, so the running distance can be extended and the energy efficiency is improved. an asynchronous motor is employed in this new system which can overcome the traditional dc drive system bugs and to reduce the cost and maintenance. in addition, the switches of dc / dc converter switch under zero current and zero voltage conditions, which can also reduce the switch losses, electro magnetic interference ( emi ) and prolong its life

    該系統在功能上實現了車輛剎車減速或下坡制動時能量的回饋，達到節能、提高能量使用效率和增加車輛行駛距離的目的；採用交流異步電機，克服了傳統直流驅動系統的諸多缺陷，降低了成本，減少了維護；採用zczvs技術，降低了電磁干擾和損耗，提高了效率；另外，在逆變主電路中採用ipm模塊，簡化了系統結構，節約了空間，提高了整個系統的可靠性和經濟性。
  17. This thesis demonstrates a " ac - dc - ac locomotive emulation experiment platform " system, which is used to simulate behaving environment of locomotive system in several control circumstance and obtain kinds of performance parameters, so it contributes to the design of locomotive. to user - computer interaction, this thesis devises corresponding graphical user interfaces, so users can configure various modules " and controllers / parameters with knowing little about the details of this emulation system

    本論文擬構造「交?直?交型電力機車模擬試驗臺」一系統，模擬電力機車系統在各種控制條件下（如牽引、制動等）的運作情況，觀測各種性能指標參數（如變壓器一次側電壓/電流/功率因數、牽引電機電壓/電流、牽引力、機車速度等） ，這對于電力機車的設計和運行具有一定的指導意義。
  18. The main work is as follow : the pater makes use of vanguard genetic algorithms in image segmentation, uses vanguard genetic algorithms to get the image threshold. using this method we may get different grey vehicles from the background exactly. used the support vector machine theory to conduct the vehicles automatic sorting simulation research, the simulation result had proven this method could quite be accurate carries on the vehicles type the recognition ; improved based on the background automatic renewal hypothesized examination region algorithm, enhanced timeliness and the accuracy which the vehicles examines ; and to has carried on the specify based on the hypothesized examination region imagery processing algorithm realization ; in the paper also introduced withdraws the algorithm based on the gradation continuous movement vehicles characteristic to carry on the vehicles the characteristic to withdraw as well as to use the localization method which colored filter same gradation chart processing unifies to carry on the realization method which the vehicles license plate locates

    本文根據智能交通控制與模擬對于交通流量、車輛到達率、車輛速度等交通信息檢測的需求，基於視頻圖像進行了交通信息處理的演算法研究與實現，主要工作包括以下幾個方面:將先鋒遺傳演算法應用到圖像閾值分割中，利用先鋒遺傳演算法尋求全局最優閾值，可以比較準確的將圖像中不同灰度的車輛從背景中分離出來;採用支持向量機理論進行了車輛自動分類的模擬研究，模擬結果證明該方法能夠比較準確的將車輛的類型進行識別;改進了基於背景自動更新的虛擬檢測區域演算法，提高了車輛檢測的實時性和準確性;並對基於虛擬檢測區域的圖像處理演算法實現進行了詳細說明;論文中還介紹了基於灰度連續性的運動車輛特徵提取演算法進行車輛的特徵提取以及採用彩色過濾器同灰度圖處理相結合的定位方法進行車輛牌照定位的實現方法。
  19. In the third chapter, an improved ca model of the traffic flow in the two - lane roadway is proposed to describe highway traffic under the open boundary conditions by the consideration of the relative motion of vehicles and the relation of deceleration probability. numerical simulations have been carried out

    本文先在改進的ns元胞自動機交通流模型的基礎上，提出一個高速公路雙車道元胞自動機模型來模擬開放性邊界條件下的車流運動，並考慮兩車道之間左邊界開放程度的比例系數及車輛加減速概率影響。
  20. The collection of real - time traffic data, such as traffic load, average travel speed, vehicle classification, and lane occupancy, plays a critical role in the advanced traffic management system and traveler information systems

    實時交通流數據的採集，包括車流量統計、車道平均車速、車型分類、車道佔有率等，在智能交通系統中起著重要的作用。
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