速度保持系統 的英文怎麼說

中文拼音 [sùdùbǎochíxìtǒng]
速度保持系統 英文
speed holding system
  • 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...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 保 : Ⅰ動詞1 （保衛; 保護） defend; protect 2 （保持） keep; preserve; maintain in good condition 3 （...
  • 持 : 動詞1 （拿著; 握著） hold; grasp 2 （持有; 保持） keep; hold 3 （支持; 保持） support; maintain 4...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  1. During the adjustment. it decided the amount and the rate of humidification. the system can test the states of water level by water lever sensor, thereby the main control module can control the entrance and drain of water and give warnings ; as its good man - machine interaction, the system can expediently set the humidity and the amount of humidification and control water - in valve and leading winds through control panel. the system can communicate with computer thereby the net supervise is enabled

    本系統主要能夠完成以下功能：採集空氣中的濕度狀態，並送入主控模塊，主控模塊根據現有的濕度判斷是保持原來狀態還是進行加濕以及加濕量的大小和加濕速度等；能夠通過水位傳感器測試水位的狀態，從而通過主控模塊控制進水、排水、預報警、報警等；具有良好的人機交互性，能夠通過控制面板比較方便地進行濕度設定、加濕量設定、進水閥的控制、導風的控制等；能夠和上位機進行通信，從而實現網路監控。
  2. The approaching aircraft was an airbus a320 which had departed hong kong for phnom penh but returning due to a minor electrical problem. as the aircraft was number one in the approach sequence, it was allowed to fly at its own speed

    該進場飛機是一班從香港飛往金邊的空中巴士a320 ，因電力系統有輕微故障而須折回，因這航機是第一班進場的飛機，所以讓飛行員保持其進場速度。
  3. Thus, it can be clearly recognized that the global continents located at near equator and southern hemisphere, showed the characteristics of range along latitude ; chinese continental blocks still located among the laurentia, siberia and gondwana in paleozoic ; following the fast moving of siberia plate to northwards, the amalgamation in north - south direction at the western parts of laurentia and gondwana, subducted the lapetus and rheic oceans, until to form the uniform pangea in the late stage of paleozoic ; however australia and india plates in eastern gondwana move and disperse gradually to southwards, to extend crust and form the paleo - tethys ocean ; the chinese continental blocks and adjacent blocks still located in paleo - tethys ocean, preserved the status of dispersion, gradually moving to northwards, showed the characteristics of range along north - south orientation, until carboniferous and triassic a series of local collisions happened in tianshan - hing ' anling, kunlun, qinling - dabie, jingshajiang and shaoxing - shiwandashan zones, thus the most part of chinese continental blocks amalgamated to eurasia continent

    由此可以清晰地看出，在古生代早期全球各大陸的主要部分都位於赤道附近及南半球，大致表現為沿緯度、呈東西向排列的特徵，中國及鄰區的小陸塊群在古生代始終都處在勞倫大陸、西伯利亞與岡瓦納大陸之間；隨著西伯利亞大陸的快速北移，在勞倫大陸與岡瓦納大陸的西部地區發生南北向拼合，亞皮特斯洋和里克洋的消亡，到古生代晚期形成統一的泛大陸；而岡瓦納大陸的東部（澳大利亞和印度等）則逐漸向南移動、離散，地殼張開，構成古特提斯洋；中國及鄰區的小陸塊群則一直處在古特提斯洋中，保持離散狀態，總體上緩慢地向北運移，並逐漸轉為近南北向的排列方式，石炭紀到三疊紀才在天山興安嶺、昆侖山、秦嶺大別、金沙江和紹興十萬大山等地段發生一系列局部性的陸陸碰撞，使中國大陸地塊的大部分逐漸併入歐亞大陸。
  4. Abstract : based on the iterative bit - filling procedure, a computationally efficient bit and power allocation algorithm is presented. the algorithm improves the conventional bit - filling algorithms by maintaining only a subset of subcarriers for computation in each iteration, which reduces the complexity without any performance degradation. moreover, a modified algorithm with even lower complexity is developed, and equal power allocation is introduced as an initial allocation to accelerate its convergence. simulation results show that the modified algorithm achieves a considerable complexity reduction while causing only a minor drop in performance

    文摘:基於迭代的比特和功率分配機制，提出了一種低復雜度的比特和功率分配演算法.與傳統的迭代分配演算法不同，該演算法在每次迭代中只需要比較幾個特定的子載波.該方法在保持傳統迭代演算法性能的前提下極大地減小了迭代分配演算法的復雜度.此外，通過選擇等功率分配方案作為初始方案加快了演算法的收斂速度，進一步降低了演算法復雜度.模擬結果表明，提出的改進演算法在基本不犧牲系統性能的前提下有效地降低了演算法復雜度
  5. In the closed loop, the information is transmitted to dsp from mcu and compared to the feedback data. then, the result would be transmitted back to the mcu for adjusting the wfs, voltage and so on to the setting values

    採用閉環控制系統，將這些參數與反饋的數據比較、計算后，再通過da輸出來調整和控制送絲速度，焊接電壓等，使其保持在設定值。
  6. We have trouble with elevator control, it is fluttering ( sharking ) slightly, we ' re to keep higher approach speed on final

    升降舵操縱系統故障，輕微抖動，我們在五邊保持稍大進場速度。
  7. The following algorithms have been proposed and tested in the thesis : 1 frequency selective fading : combine the isomorphism between the input space and the output space and propose a new approach to blind equalization of the channel. compared with conventional methods, the new approach offers lower computational complexity, better performance, and more robust against the over - determination of the system order ; 2 time selective fading : a new approach to the equalization of time selective channel based on the zero - forced equalizer is proposed which is more simple in its structure of algorithm ; 3 time - varying channel : using the instantaneous mean value changes of the output signal to extract the information of channel variations and model it using ar model, kalman filter is then employed to track channel variations, it bears faster ability in tracking the variation of tv channels ; based on the isomorphism between the inputs and the outputs and some of the approaches using in mimo system, a new algorithm of equalization of simo time - varying channel is proposed, which also share the merits of being robust against the over - determination of the system order ; model the time - varying channel using the multi - resolution decomposition wavelets, and then a blind identification method based " on the model is proposed ; at last, a new model for equalization and identification of mimo system is proposed

    主要工作在以下幾個方面： 1 、針對頻率選擇性衰落通道：結合輸入輸出空間同構關系提出一種新的頻率選擇性通道均衡方法，與傳統方法相比，該方法計算量更小，收斂速度更快，性能更優，且對系統階次的過確定表現穩健，具有實際均衡應用價值； 2 、針對時間選擇性衰落通道：提出一種基於迫零均衡的時間選擇性通道均衡方法，演算法結構簡單； 3 、針對時變色散通道：利用瞬態均值曲線提取通道時變信息，對之ar建模，利用卡爾曼濾波器跟蹤時變通道抽頭變化，可以快速跟蹤通道變化；基於輸入輸出空間之間的同構關系以及多輸入多輸出系統的處理方法，提出了新的單輸入多輸出色散時變通道均衡與識別演算法，同樣具有對通道階次過確定保持穩健的優點；結合小波多解析度分析提出一種基於小波模型的通道盲識別演算法；研究時變的多輸入多輸出系統的盲均衡與盲反卷積問題，給出一種時變系統處理模型。
  8. The application avoids system slowdowns that result from keeping the original transaction open while performing the work

    應用程序可避免由執行此項工作時，保持原始事務為打開狀態而引起的系統速度下降。
  9. The results of numerical experiments, using the four - dimensional variational data assimilation system of the nonhydrostatic mesoscale model mm5, show that : the tangent linear model and adjoint model conducted by keeping the " on - off " switches the same as the basic state, can provide a good approximation of the first - order information to the nlm perturbation and a good descent direction for the minimization procedure ; switching on and off at every other time step in the kuo cumulus parameterization scheme do n ' t impact the convergence rate of cost function ; the existence of the switches do n ' t impact improvement to the mm5 model rainfall prediction because that not only specific humidity, but also wind, temperature and pressure are assimilated into the model

    非靜力中尺度數值模式mm5的四維變分資料同化系統進行的數值試驗結果表明： 「開關」變量保持與基態一致，所構造的切向線性模式能夠提供關于非線性模式擾動的一階近似，伴隨模式所計算的梯度值能夠為最小化過程提供較好的下降方向；郭氏降水參數化方案中對流每隔一個積分步的交替發生並不影響目標函數最小化的收斂速度； 「開關」變量的存在也不影響將風、溫度、氣壓和比濕結合起來同化對mm5降水預報準確性的提高。
  10. The purpose of the cooling system is to keep the engine at its most efficient operating temperature at all engine speeds under all driving conditions

    冷卻系統的作用是在任何的駕駛環境中，在任何的發動機轉速下保持發動機處在最有效的工作溫度。
  11. Statistically, it makes a quantitive analysis on the evolvement of the country economic structure in xi ' an city, the economic benefit of the changes in industry structure, the effect on labor resource collacation in industry structure and the effect of the increasing income of countrymen in industry structure changes, which discloses a rule of the industry structure evolvement in country. the putting forward of the non - agriculture industry in country, especially the rapid increase in country industry will promote the rise of the country industry level for a long term. the country industry structure influences a lot the increase of the farmer ' s income which is also affected by agriculture structure and planting structure, but less. the non - agriculture industry plays a main role in the increase of farmer ' s income. for the low level of the townlization and industrialization, developing industry, construction and commercial in country is very feasible to resolve the problem of spare labors in country. it is strengthening labors transferring and reducing the modulus of labor over the infield that farmers income could be kept increasing. after a theoretical analysis and twenty years practise in the regulation of country economy structure after the reform and opening policy in xi ' an, a new thought of regulating country economy structure in xi ' an is put forward that a strategic regulation must be taken in country economy structure and the agriculture structure must be optimized. moreover, an expanding agriculture must be developed and transfer the spare labors in country effectively. so the government function during the regulation of country economy structure is transferred to : the first one, making the stress policy in the regulation of country industry structure. 2ndly, strengthening the force in regulating country industry structure ; 3rdly, making a plan on the regulation of country industry structure ; 4th promoting the optimizition and upgree of industry relying on sci - tech progress ; 5th enhancing the townlization and optimizing the country industry structure ; last one, improving the quality of labors in full scale

    本文在概述經濟結構理論的基礎上，第一次系統地研究了西安市農村經濟結構調整，用數據統計的方法，定量、定性地分析了西安市農村經濟結構演變的軌跡，分析了產業結構變動的經濟效益、產業結構勞動力資源配置效應、產業結構變動的農民收入增長效應，揭示了農村產業結構演變的規律。提出農村非農產業，尤其是高速增長的農村工業，對促進農村產業水平的提升起著長?推動力的作用；農民收入增長直接受農村產業結構的影響最大，農業產業結構、種植業結構對農民收入有影響，但作用不可高估；非農產業是農民增收的主要支撐力量，解決農村余勞動力在城鎮化、工業化水平不高的情況下，切實可行的選擇是在農村發展工業、建築業、商飲業等非農產業；農民收入要保持快速增長態勢必須加大農村勞動力轉移力度，減少耕地承載勞動力的系數。通過理論分析，結合西安市改革開放后20多年的農村產業結構調整的實踐，提出了西安市農村產業結構調整的發展思路及目標、原則，明確指出了政府在農村經濟結構調整過程中的職能轉變的重要方面：一是制定農村產業結構調整的傾斜政策，二是加大對農村產業調整的投入力度，三是制定產業結構調整的規劃，四是依靠科技進步促進產業優化和升級，五是加快城鎮化過程，優化農村產業結構。
  12. The contributions done are as follows : according to the mathematical model of doubly fed motor and the theory of vector control, a unit power factor of rotor control scheme is proposed. in the doubly fed adjustment system, in order to control magnetic torque of motor this scheme is designed by controlling the reverse direction between rotor voltage and current to keep the vertical direction between rotor current and flux. it is known from theoretical analysis that for partly decoupling this scheme is only effective under sub - synchronization speed, but not control the system and obtain steady state since speed adjustment system ca n ' t adjust the magnitude of rotor flux under sup - synchronization

    而傳統的無速度傳感器雙饋調速矢量控制系統，由於採用磁鏈定向方法，在同步速附近存在較大的工作死區，針對上述問題，本文做了如下的研究工作：本文從雙饋電機的數學模型出發，根據矢量控制的基本原理，提出了一種轉子側功率因數為1的雙饋電機矢量控制方案的設想，即在雙饋調速時採用轉子電流定向的方法，並控制外加轉子電壓與轉子電流始終反相，以保持了轉子電流與轉子磁鏈矢量垂直，通過控制轉子電流的大小來達到控制電機電磁轉矩的要求。
  13. Based on the most popular open - source database system mysql, it not only retains the high performance of mysql itself, but also possesses most virtues of distributed and parallel systems, such as high reliability, high availability, high throughput, large storage capability, etc. the whole system can be divided into four sub - systems, which are user interface sub - system, communication sub - system, server managing sub - system, and distributed and parallel executing sub - system

    它以當前最為流行的開放源碼數據庫mysql為基礎，不但保持了mysql的高處理速度，而且具有分散式并行系統的高可靠性，高吞吐量、高存儲容量等一系列優點。根據功能可以把該系統劃分為四個組成部分：用戶介面子系統、通信子系統、服務器管理子系統和執行子系統。
  14. This thesis, according to limestone environmental characteristic and characteristic of construction of highway of mountain area of limestone, sets out in excavating from the road bed of the angle of environmental protection, according to trying not to excavate, how to reduce to excavate, how to reduce and excavate the impact on surrounding environment of the course, how to go on the expressway view and ecological environment and how to carry on environmental quality resume, we employ theories such as engineering of traffic, rock soil engineering, traffic psychology, traffic aesthetics, operations research, etc. we have excavated environmental protection theory and method and carried on research to the mountain area expressway road bed of limestone systematically, propose the road bed to excavate and optimize, slope protect, discard cubic meter of earth and stone deal with, natural river system recuperate recovery, view environmental recovery, environmental quality resume theory system of appraising etc.

    本論文依據石灰巖山區環境特徵和石灰巖山區高速公路建設特徵，從路基開挖中環境保護角度出發，按照盡量不開挖、如何減少開挖、如何減少開挖過程對周圍環境的影響以及如何對高速公路景觀和生態環境進行恢復、如何對建設項目進行環境質量評價等思路，應用交通工程學、巖土工程學、交通心理學、交通美學、運籌學等理論與方法，系統地對石灰巖山區高速公路路基開挖環境保護理論與方法進行了研究，構建了包括路基開挖優化、邊坡防護、土石方處理、自然水系調治恢復、景觀環境恢復、環境質量評價等理論或方法的石灰巖山區高速公路環境保護理論框架，為促進石灰巖山區高速公路的可持續發展提供了基本思路。
  15. Then experiments which use the real data are performed. in the experiments, the velocity got by gps is used to be the reference. when the vehicle moves, the alignment system keeps working

    車載試驗數據離線分析，試驗中使用gps測得的速度信息作為外測參考速度信息，在車輛運動過程中對準系統保持工作狀態。
  16. The system error is mainly determined by sensor error and initial alignment error by analyzing the error transfer characteristic of the sins system. after compensating the sensor error, the precision of the whole system almost remains the initial alignment process. it should include of gyroscope and speedmeter to compensate the error

    通過對sins系統的誤差傳播特性分析可以發現，系統的誤差主要由傳感器誤差和初始對準誤差決定，在對傳感器誤差進行補償之後，整個系統的精度幾乎就保持在初始對準的精度上；另外，在初始對準過程中還包含陀螺和加速度計的測漂和定標工作，以便進行誤差補償。
  17. In this thesis, the database of gps vehicle monitor information management system is designed, the design of the man - machine conversation interface and the software of the database server, also the software of the mid - ware are accomplished. an improved and logical three layer structure framework is used to utilize the resource of the system efficiently, balance the load, and improve the expansibility of the system ; powerful oracle database is used as background database to provide high performance service to the system which has numerous users and large - scale ; encrpytion arithmetic of communication data is designed to ensure the safty of gps vehicle monitor information management system communication ; the usage of fire wall, system privilege management and data backup improved the safty of the information management system database ; high usability design is realized by oracle data guard ; optimization of the information management system made the whole gps vehicle monitor system persistent, stable and high quality

    本文針對原有gps車輛監控系統響應速度慢、穩定性和安全性不高的不足，提出了一種以改進的三層結構體系為系統架構，以oracle數據庫為后臺的gps車輛監控信息管理系統設計方案，設計了gps車輛監控信息管理系統數據庫，完成了gps車輛監控信息管理系統人機界面、中間件及數據庫端的軟體設計。系統架構採用改進的三層結構體系，其邏輯結構清晰，有利於系統資源的有效利用，均衡負載，提高系統的可擴展性;后臺數據庫採用功能強大的oracle數據庫，可以提供大規模、多用戶的高性能服務;通信數據的加密演算法有利於確保gps車輛監控信息管理系統的通信安全;防火墻的使用、系統權限管理以及數據的備份和恢復等有利於提高gps車輛監控信息管理系統數據庫的安全性， oracledataguard的使用有利於提高系統的可用性;系統的優化，為系統持續、穩定、高質量運行創造了有利條件。
  18. Based on the former researches, the speed estimation and rotor flux observation methods are studied using the theory of model reference adaptive system. considering the time variability of the stator and rotor parameters of induction motors, the methods make real - time identification of the parameters to retain the dynamic performance of the drive system

    在前人研究的基礎上，本文應用基於超穩定性理論的模型參考自適應系統，對無速度傳感器矢量控制系統的轉速估計和轉子磁鏈觀測進行研究，考慮電機定轉子參數的時變性，對電機的一些定轉子參數進行實時辨識，以保持系統的動態性能。
  19. Process system optimization ( pso ) has become a major technology that helps companies in process industry to remain competitive. numerical derivatives play an important role in mathematical programming, which is the core area in pso

    隨著計算機技術的飛速發展和企業自動化程度的不斷提高，過程系統優化已經從純學術的理論發展成為能對工業起到巨大推動作用的技術力量，成為過程工業企業保持競爭力、在激烈的市場競爭中立於不敗之地的主要技術手段。
  20. Based on the most popular open - source database system mysql, it not only retains the high performance of mysql itself, but also possesses most virtues of distributed and parallel systems, such as high reliability, high availability, high throughput, large storage capability, etc. this thesis mainly research the consistency mechanism of distributed and parallel database, the consistency mechanism of database system can provide user normal database service

    它以當前最為流行的開放源碼數據庫mysql為基礎，不但保持了mysql的高處理速度，而且具有分散式并行系統的高可靠性，高吞吐量、高存儲容量等一系列優點。本文主要研究分散式并行數據庫的一致性機制，數據庫的一致性機制是保證分散式并行數據庫系統能正常提供數據庫服務的基礎。
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