無應變速度 的英文怎麼說

中文拼音 [wúyīngbiànsùdù]
無應變速度 英文
zero strain velocity
  • 無 : 無Ⅰ動詞（沒有） not have; there is not; be without Ⅱ名詞1 （沒有） nothing; nil 2 （姓氏） a surn...
  • 應 : 應動詞1 （回答） answer; respond to; echo 2 （滿足要求） comply with; grant 3 （順應; 適應） suit...
  • 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
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. Bridge health remote monitoring is a method to monitor a bridge in lineate or wireless way in real time, it changes the traditional way of monitoring by manpower, works more automatically, highly increase the response speed when any structure breakage is happened, save manpower and material resource, through this method, people can also manage many bridges in one place remotely

    橋梁遠程監測是利用有線或無線通信方式實現橋梁狀態實時遠程監測的方法，它改變了傳統的以人工為主的監測手段，大大提高了橋梁監測的自動化程度，提高了對橋梁結構損壞和突發事件的反應速度，節約人力物力，是國內外的熱點研究領域。
  2. Compared with the mud on wall form hole technology, clash stake technology or vibration sink pipe technology used in complex foundation stake forming, it has advantages of no vibration, no pollution, and no noise. in addition, since the concrete pressed into the drill stem sent vibration free concrete to the pump, so it is eas y to ensure the quality of the stake body. compared with the mud on wall and dry work form hole technology, the side obstruction and end obstruction of screw drill press concrete stake have all been accordingly improved, the weight bearing is better, and the transmutation of the complex foundation is less

    其中，螺旋鉆孔壓灌混凝土成樁技術自研製以來，已在多項復合地基工程中進行了應用，較好地解決了軟弱地層成孔困難的問題，適應地質條件范圍廣，成樁速度較快，工期短、工效高；與復合地基成樁時的泥漿護壁成孔工藝、振沖樁工藝或振動沉管工藝施工比較，具有無振動、無污染、無噪音的優點；另外，壓入鉆桿內的混凝土為泵送免振混凝土，因此樁體質量易於保證；與泥漿護壁和干作業成孔工藝相比，螺旋鉆孔壓灌混凝土成樁的側阻和端阻都有相應的提高，樁的承載性能較好，復合地基的變形較小。
  3. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上，本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型，並對它們進行了分析和模擬；第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件；第四章針對傳統擴展卡爾曼（ ekf ）方法的缺點，提出了一種修正協方差的擴展卡爾曼濾波（ mvefk ）方法，並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較；第五章通過引入雷達機動目標跟蹤方法和模型，提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法；第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究，提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。
  4. Vector - contorl wvf system of asynchomous motor is a high performance speed - control system and has been used in a lot of situations of high precision and high performence. in the base of vector - control, some control methods are developing, for example speed - sensorlesss control and self - adaptation control

    矢量變換控制的異步電動機變頻調速系統是一種高性能的調速系統，已經在許多需要高精度、高性能的場合中得到應用。以矢量變換為基礎的許多控制方法，諸如無速度傳感器控制、自適應控制等正在發展中。
  5. Aiming at the study actuality of fan performance monitoring system and analysis of fan performance curve changes affected by inlet - box and the different fixed - angles of guide blades in the course of installation, a fan flow monitoring model based on rbfnn in whole flow zone was established in this thesis. in the model, the method of no throttle and fan performance curve were used as basis. and on the basis of that model, fan performance curves of 4 - 73no. 8d were approached with experimental data of different speed, different opening - angles of guide blade and different resistance of pipeline, the precision and the error law of model were studied

    本文針對電站風機性能監測系統研究較少的現狀，在實驗的基礎上分析了現場加裝進氣箱和由於安裝造成的導流器葉片開度不一致對風機性能曲線的影響，並在此基礎上採用無節流方法測量流量，以風機調節性能曲線為依據，建立了基於徑向基函數（ rbf ）神經網路的風機流量全程監測模型；以實驗室4 - 73no . 8d離心風機為研究對象，探討了rbf神經網路差壓模型在變轉速、變導流器開度和變管網阻力等工況下的應用精度和誤差分佈規律；最後用visualc + +語言開發了風機性能在線監測系統。
  6. The effect of compound casting technology and compound modification on the properties of high speed steel roll collar was studied. the results showed that compound high speed steel roll collar with high and even hardness and good bond between outer and inner layers could be gained when the modified colbalt free high speed steel in outer layer and nodular iron inner layer in connection with appropriate rotational speed of centrifugal machine, pertinent pouring interval between two kinds of the melt and moderate pouring temperature as well as surface induction heat treatment were chosen. it is indicated in industrial use that the service life of compound roll collar is higher by 5 times than that of high chromium cast iron collar

    研究了離心復合鑄造工藝和復合變質處理對高速鋼輥環性能的影響，結果表明，選用變質高碳無鈷高速鋼作外層，用球鐵作內層，選擇合適的離心機轉速、兩種金屬熔液澆注間隔時間和澆注溫度，結合採用表面感應熱處理工藝，可獲得硬度高、均勻性好、內外層結合良好的高速鋼復合輥環，用於工業生產其使用壽命比高鉻鑄鐵輥環提高5倍以上。
  7. It is good in regulation and wide in suitability, the thickness of raw material layer and movable speed inside the machine and the amplitude can be adjusted through continuous bariable speed

    可調性好，適應面寬，料層厚度在機內移動速度以及振幅變更均可實現無級調節。
  8. Lagrange wave speed in the release process was computed from the measurement, and result shows a good agreement with the data in literature. furthermore from the lagrange wave speed, the stress - strain relationship in the release process was calculated using the impedance match solution. comparison of the stress - strain with the fluid elastic - plastic model indicates that ofhc copper exhibits a clear work - harden behavior during the release

    根據界面粒子速度剖面，計算得到了卸載過程中lagrange聲速隨界面粒子速度變化的關系，所得結果與文獻給出的數據符合很好；其次，利用阻抗匹配近似，計算分析了無氧銅卸載過程的應力-應變關系，並與流體彈塑性模型進行了比較，結果表明：無氧銅的卸載過程存在明顯的應變硬化效應。
  9. Second, we introduce a two - lane traffic model which is based on the ( 0, 2 ) and ( 0, 1, 2 ) models. we mainly study the coupling effect of lanes. in two - lane traffic, vehicles can change lanes and overpass. the interactin between lanes is considered as coupling effect. the computer simulation indicate that ( dthe current of the system with cupling is greater than that without coupling ; 0for a certain initial density, the average flow and speed are indepent on the coupling coefficient which is greater than zero ; when the initial densities ( speeds ) of lanes are different, the characters of traffic system will be different

    在單車道模型的基礎上，建立v _ （ max ） = 2雙車道模型，研究車道的耦合效應。雙車道模型中車輛可以進行轉道、超車，兩道之間有耦合作用。模擬結果說明，有耦合時系統的流量比沒有耦合時大；在固定的初密度條件下，只要耦合系數b 0 ，兩道間的耦合強弱對流量和速度無影響；兩道初密度分佈不均勻和速度分佈不均勻都能使交通系統特性發生變化。
  10. Virtual instrument ( vi ) technology and er technology are combined together. the measurement and control system of rera are set up based on vis. the establishing and controlling scheme of the system are introduced

    波紋式電流變傳動機構是電流變技術在傳動機械學中的一項突破，它具有響應速度快、能實現無級調節和易於計算機控制等優點。
  11. Among the adaptive beam - forming algorithms, the least mean square algorithm is widely used because it has a simple configuration and it is apt to come true and have nice convergence. on the other hand, it has a disadvantage that it converges slowly and there is a conflict between the fixed step and the convergence pace or the error in stabilization. so people have developed many improved least mean square algorithms which generally start from convergence, stabilization, misadjustment, and robustness and come to a formula about variational step in the end

    在自適應波束形成演算法中，最小均方（ lms ）演算法因結構簡單，易於實現，能穩定收斂而得到廣泛應用，但它也存在收斂速度受限的缺點：固定步長因子無法解決收斂速度和穩態誤差之間的矛盾。因此，人們提出了各種改進的最小均法演算法來解決這一問題。改進的最小均方演算法通常從如何改進收斂速度、穩態誤差、失調量和魯棒性等指標上出發，最後在新演算法最終表達式中的步長公式上變化。
  12. The paper lucubrated the control theory of induction motor ' s vector transform and the method of calculating speed by induction motor ' s torque current weight, based on which, the paper designed a close - loop speed - sensorless vector control vwf system and realized the system in matlab / simulink

    本文深入研究了感應電動機矢量變換的控制理論和利用電動機轉矩電流分量進行速度推算的方法。在此基礎上設計了一個閉環的無速度傳感器矢量控制變頻調速系統。
  13. The joint transform correlator ( jtc ) is paid more attention by researchers than the matched filtering correlator ( mfc ) with its advantages, such as high spatial bandwidth product, without integrated filtering and real - time operation etc. photorefractive crystals have some advantages, such as fast response, high spatial resolution and large storage capacity etc. we can exert both advantages by combining the photorefractive crystal with the jtc

    與匹配濾波相關器相比，聯合變換相關器具有諸多優點，如空間帶寬積高、無需濾波綜合、易於實時操作等，所以近年來更加引起人們的研究興趣。光折變晶體具有響應速度快、空間解析度高、存儲容量大等優點。將光折變晶體與聯合變換相關器相結合構成光折變聯合變換相關器，就可以充分發揮二者的優勢。
  14. After the mathematical model of asynchronous electromotor is build, the method of space voltage vector is taken to discuss the essential principle and structure, and arithmetic of direct torque control, and the application of circular magnetic chain self - operated control and the technology of sensor without velocity in direct torque frequency conversion timing are emphasized

    在建立異步電動機的數學模型之後，採用空間電壓矢量分析方法討論了直接轉矩控制的基本原理結構及其演算法，著重研究了圓形磁鏈自控制和無速度傳感器技術在直接轉矩變頻調速中的應用。
  15. Comparing with the current observations, which include the number density distribution in space, mass function, etc., the so - called standard modes for both the power law and gaussian cluster initial mass functions are selected among many runs of simulations. the deviation from the standard modes, which is resulted from the change of the parameter for the initial conditions, is discussed in detail. the discussion of the model parameters is also presented although they are adopted as the typical values based on previous work

    對應一定的初始分佈我們發現無論是冪律的還是對數高斯的球狀星團初始質量譜經過長時間的動力學演化都會得到和現在銀河系觀測到的球狀星團系統相符的對數高斯的質量分佈；動力學演化會明顯地改變球狀星團系統的空間密度分佈，靠近銀心區域的球狀星團瓦解得更多；經過動力學演化后的球狀星團速度分佈函數在靠近銀心的區域明顯得不同於初始分佈，初始擁有較大軌道偏心率的球狀星團更容易瓦解。
  16. By means of trigonometrical progression method and the mainline track spectrum, the sample function of the chinese mainline railway track random geometric irregularity is simulated. with the data obtained from track geometry inspection car on qinhuangdao - shenyang special line for passenger transport and arma time series model, the sample function of high - speed railway track random geometric irregularity are simulated. based on existing literature, the artificial bogie crawl waves at various different speeds are randomly simulated

    根據我國干線鐵路軌道譜，採用三角級數法模擬出干線鐵路和準高速鐵路軌道不平順的樣本函數；根據秦沈客運專線高速試驗段軌檢車資料，採用arma時間序列模型模擬了高速鐵路軌道不平順隨機樣本函數；在既有研究資料的基礎上模擬出各種速度客車構架人工蛇行波；用隨機變量描述道床橫向剛度，並進行了隨機模擬；將振動理論和穩定理論結合建立系統的分析模型和運動方程；根據monte ? carlo法編制了車輛?軌道耦合系統隨機振動分析程序，進行了無縫線路隨機動力響應分析，通過試驗對計算模型、計算方法進行了驗證。
  17. The gpd3402 inverter and plc being selected to set up open - loop and closed - loop speed regulation systems, applying the invariable v / f control, sensorless vector control, slip compensation, process pi and network control technologies control the hoist motor of the stacker crane

    本文基於gpd3402變頻器的變頻調速方式進行應用開發，對堆跺機提升電機採用變頻調速控制，採用gpd3402變頻器及plc ，組建開環調速系統，分別應用恆壓頻比、無速度傳感器、矢量控制、轉差補償控制技術。
  18. Specific issues examined are : compensation for the variation of the stator resistance, the offset error of the dc bus voltage, the voltage error generated by the forward voltage drop the dead time of the switches, improvement of the steady state performance, and the speed sensorless control for the pmsm dtc drive system are of major concern in this thesis

    定子電阻變化，直流母線電壓漂移，開關器件反向相電壓降、逆變器死區時間引起的電壓誤差的補償，提高系統穩態運行性能以及永磁同步電機直接轉矩控制的無速度傳感器運行方案等問題都是本文研究的重點。轉矩的快速響應是直接轉矩控制演算法的一個卓越的性能。
  19. Based on the microscopic tem and sem observations, relationships between dislocation structure and rate - dependent / rate - independent behaviors under certain range of temperature and strain rate were presented. interactions between grain boundaries and dislocations were analyzed

    利用tem 、 sem分析手段，觀察到一定溫度和應變速率區間內率相關與率無關變形的位錯組態區別，及晶界對位錯的不同作用。
  20. The integration of wireless acceleration sensor for structural global monitoring, the integration of wireless strain sensor for structural local monitoring, their corresponding network ’ s topological strucuture, the network ’ s communication protocol, saving energy and the network ’ s experiments are studied systemly, the main contents include : 1. for strucutal global monitoring, the electronics components are compared, anlysysed and seleced. on this base, the design modulization method is used for designing and debugging sensing disposal module, micro - processing module, wireless transceiver module and power module, and thus a wireless acceleration sensor node with digital interface is integrated using the above modules

    本文在充分研究傳感技術、信號處理技術、無線通信技術的基礎上，針對土木工程結構整體性態監測的無線加速度傳感器集成、結構局部性態監測的無線應變傳感器集成以及相應的無線傳感器網路拓撲結構、網路通信協議、網路能耗處理、網路試驗等問題進行了系統的研究，主要研究內容如下: 1 .針對結構整體性態監測的需要，從設計的小型化、低功耗、低成本、高可靠性角度出發，對相關電子器件進行了比較、分析、選擇;在此基礎上，採用模塊化設計方法，對傳感處理模塊、微處理模塊、無線收發模塊以及能源模塊分別設計、調試，進而集成了基於數字介面的無線加速度傳感器節點。
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