矢幅 的英文怎麼說

中文拼音 [shǐfú]
矢幅 英文
yahaba
  • 矢 : Ⅰ名詞1. （箭） arrow 2. （尿） excrement; dung; feces 3. （姓氏） a surname Ⅱ動詞（發誓） vow; swear
  • 幅 : Ⅰ名詞1. （布帛、呢絨等的寬度） width of cloth 2. （泛指寬度） width; size 3. （姓氏） a surname Ⅱ量詞（用於布帛、呢絨、圖畫等）
  1. The algorithm of svpwm that is adopted by the system implements motor speed - regulation by control of magnitude and phase of motor flux. it can generate less harmonics in the output current of power inverter and less losses of ac motor, reduce pulsant component in output torque and raise availability of dc supply voltage

    系統採用的svpwm演算法通過對空間磁鏈矢量幅值和相位的控制來調節電機轉速，減少了逆變器輸出電流的諧波，降低了脈動轉矩，提高了電壓的利用率。
  2. As the vectors go around, the amplitude of the sum vector gets bigger, and smaller, and the intensity pulsates.

    在矢量旋轉時，合矢量的振幅時而變大，時而變小，因而強度作脈動變化。
  3. While two ( or more ) electromagnetic waves of the same frequency, same direction of vibration, same phase or constant phase difference superpose in space, the amplitude of composite wave is vector sum of the amplitude of each wave

    由兩個（或兩個以上）頻率、振動方向相同、相位相同或相位差恆定的電磁波在空間疊加時，合成波振幅為各個波的振幅的矢量和。
  4. The main feature of aesa is to adaptive produce null in the pattern by weight control of elements in the array

    通過陣元收發幅相的權矢量控制，以使波瓣在產生干擾的方向「置零」 。
  5. A set of non - linear differential equation of this model is formulated based on lagrange ’ s equation. the tension of the cable, the control force of translation and the control torque of rotation are obtained by the method of newton ’ s laws in vector space. the tethered mass system is modeled as a spherical pendulum

    本文基於一種常見的繩系單體系統，運用lagrange方程建立了該系統的非線性運動微分方程，採用矢量法對該運動微分方程進行了校核，並推導出吊索的張力、變幅控制力和回轉控制力。
  6. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。
  7. In this paper, based on understanding and mastering image processing, we input the drawing into the computer by the image conversion, then automatically get and recognize the element by the method of the image processing and pattern recognition. at last, on the base of the understanding of the whole drawing, we will transform the information of the picture and the character to the vector format, on which we can make the vivid courseware

    本文在理解和掌握圖像處理主要技術基礎之上，主要討論通過圖像轉換裝置將圖紙輸入到計算機，運用圖像處理、模式識別等理論和方法進行圖像中各種要素的自動提取識別，在實現對整幅圖紙理解的基礎上，自動將圖紙和符號信息轉換為矢量數據格式。
  8. Diagrams of velocity vectors and streamlines display waveform and amplitude properties, showing the effect of fibres on enhancing the flow stability. the computational results are tested

    Piv測量得到流場速度矢量圖及流線圖，擾動波幅與波形特徵說明， re數一定時流動穩定性隨h值增大而提高。
  9. In the tour information system vector chart and the traditional ordinary traveling map compares, the main superiority lies in : not having the map sheet limit ; the current situation good ; manifestation diversification

    旅遊信息系統中的矢量化圖與傳統紙質普通旅遊地圖相比，主要優勢在於:無圖幅限制;現勢性好;表現形式多樣化。
  10. On the aspect of data model, based on improving and extending the gdf data model, the data model of sde was put forwad. the data model can express multi - section data and semantic relations between different feature layers. it support segment attributions, so can express a segmental attribution of a line feature

    在數據模型方面，在gdf數據模型的基礎上進行了改進和擴充，提出了sde的數據模型，該模型具有多圖幅數據連續性表達、能表達不同層要素之間語義關系、支持段屬性，能夠表達線要素屬性上某一段屬性、支持多媒體數據類型等優點，並對數據庫中矢量數據的存放方式作了比較實驗。
  11. Using torque vector control method can increase motor ' s output torque, and can upgrade motor ' s dynamic characteristic. finally, the thesis gives and analyses running results of the motor control systems after using different control methods

    步進電機轉矩矢量控制策略能夠提高電機輸出轉矩的穩定性和幅值，也提高了電機的穩態和動態特性。
  12. The affection brought up by magnitude and phase in vector signal analysis

    幅相特性對矢量信號分析性能影響
  13. 2. the principle that cylinder misfire is diagnosed using torsional vibration harmonic analysis is illustrated by calculation of vectorsummation. calculation and experiment show : low harmonic will increase highly and main harmonic will decrease little when one cylinder is misfiring

    通過對扭振激勵的相對振幅矢量和的模擬和實驗研究，得到結論如下：如果柴油機發生單缸熄火故障，扭振低諧次幅值會大幅度增加，主簡諧會略有下降。
  14. An algorithm for detecting moving ir point target in complex background is proposed, which is based on the reverse phase feature of neighborhood ( rpfn ) of target in difference between neighbor frame images that two positions of the target in the difference image are near and the gray values of them are close to in absolute value but with inverse sign. firstly, pairs of points with rpfn are detected in the difference image between neighbor frame images, with which a virtual vector graph is made, and then the moving point target can be detected by the vectors ' sequence cumulated in vector graphs. in addition, a theorem for the convergence of detection of target contrail by this algorithm is given and proved so as to afford a solid guarantee for practical applications of the algorithm proposed in this paper. finally, some simulation results with 1000 frames from 10 typical images in complex background show that moving point targets with snr not lower than 1. 5 can be detected effectively

    基於運動點目標在鄰幀差分圖像中所具有的近鄰反相特徵，即運動點目標的兩個位置相鄰近、灰度值一正一負，提出一種在復雜背景下，基於紅外序列圖像的運動點目標檢測演算法.本演算法利用該特徵在鄰幀差分圖像中檢測反相點對，進而構造反相點對矢量圖，最後依據累積反相點對矢量圖中多矢量首位相接的連續性檢測出運動的點目標.文中給出並證明應用本演算法能以概率1檢測到運動點目標的收斂性定理.對典型復雜背景下10幅1000幀圖像的模擬結果表明，當信噪比大於或等於1 . 5時，可以有效檢測出運動點目標
  15. In the researches about hexagon track, smith triggers are used, so is flux self - control. as to round track, the method of voltage vector selection is taken. we can select the proper voltage vector by the position and magnitude of stator flux as well as the magnitude of torque

    在六邊形磁鏈的研究中，本文主要是使用了施密特觸發器，通過磁鏈自控制單元來實現的；而對于圓形磁鏈的直接轉矩而言，則是利用了電壓矢量查表的方法，通過實時判斷磁鏈的區間和幅值、以及轉矩的大小，繼而從表格中選擇合適的電壓矢量。
  16. Introduce the traditional two samples rotation vector algorithm and three samples rotation vector algorithm, which fit the incremental angular condition. but, the output of fiber optic gyro is angular rate of the vehicle, the error would increase serious if use traditional algorithm

    由於光纖陀螺儀輸出為角速率信號，而傳統的旋轉矢量演算法輸出為角增量信號，採用角增量提取演算法，旋轉矢量精度會大幅大降。
  17. The operating principles of svpwm and associated control algorithms are also covered in the paper. by using svpwm to control the magnitude and phase angles of the spatial voltage vector, the speed control of the drive system in this paper can reduce the output of current harmonics, lower the torque ripple, and improve the energy efficiency

    本文還對svpwm的工作原理和控制演算法進行了研究，控制系統採用svpwm演算法，通過對空間電壓矢量的幅值和相位的控制來調節電機轉速，減少了逆變器輸出電流的諧波，降低了脈動轉矩，提高了電壓的利用率。
  18. Considering muti - station of communication systems, a kind of vector graph ' s connection project is presented, which can unite fast two or more maps as a big electronic map, having great adaptive ability and flexibility

    根據大慶石油管理局通信站的實際情況，設計了一種具有較強適應性和靈活性並具有抗干擾能力的矢量圖形的拼幅演算法。實際應用結果證實了拼幅演算法的有效性。
  19. By simulating mathematically on frequency and on space, we can find the average speed of space field and the average speed of frequency field that is weighted by amplitude, and analyse their relation, and analyse the meaning of space speed variance x and frequency speed variance v. in the fourth part, how to ensure the height of cloud is introduced, and basing on the theory of wind field continuity, the height updating quality controlling is introduced. in the fifth part, the system of cloud wind is introduced, we tracked cloud - motion of consecutive satellite images with one - minute interval by the 1 - d fourier analysis technique and the two - dim fourier analysis technique and the fft analysis technique, and dispose them with quality controlling. in the sixth part, we summarized our research and put up with shortages of this article

    模擬模塊內各點的速度線性變化時，得到空間域平均速度以及頻率域以振幅為權重的平均速度，分析了空間域平均速度和頻率域以振幅為權重的平均速度的關系，並揭示空間域的平均速度的標準差_ x和頻率域的振幅為權重的平均速度的標準差_ v的意義，以及它們之間的關系；第四章介紹了雲跡風系統的高度指定以及風矢高度的劃分，並根據風場連續性原理，介紹了高度調整法的質量控制；第五章介紹導風系統的流程，選擇了三個時刻的ir雲圖，分別用一維傅立葉相位法、二維傅立葉相位法和快速傅立葉演算法計算一個風場個例，並對所得風場進行質量控制，並給出風場圖；第六章進行研究總結，指出不足和有待于進一步研究之處。
  20. A new skeletonization algorithm based on constrained delaunay triangulation. in international symposium on signal processing and its applications, vol. 2, 1999, pp. 927 - 930

    基於以上操作，我們就能為一幅光柵圖生成基於dbsc的矢量表示，以進行高質量的繪制。
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