矢量差 的英文怎麼說

中文拼音 [shǐliángchā]
矢量差 英文
phasor difference
  • 矢 : Ⅰ名詞1. （箭） arrow 2. （尿） excrement; dung; feces 3. （姓氏） a surname Ⅱ動詞（發誓） vow; swear
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  1. Vector differences may also be found by the method of rectangular resolution.

    矢量差也可用正交分解求得。
  2. On the part of the design of nine - component thrust vector stand, an automatic hydraulic pressure original position calibration system, a scheme of original position calibration, and the great rigidity universal flexible combinatorial underprop are designed. by using the scheme of “ universal flexible combinatorial underprop plus software digital filter ”, the inherent frequency of test stand is improved, and the problem of test stand libration is solved. then, the resolving method of the disturbance between underprops of the moveable frame is proposed, and the disturbance revise equation is deduced

    在推力矢量試車臺設計方面，設計了自動液壓原位校準系統、原位校準方案以及大剛度萬向柔性組合支撐;採用「萬向柔性組合支撐+軟體數字濾波」的方案，提高了試車臺動架的固有頻率，解決了試車臺動架的振動問題;提出了動架約束互擾問題的解決方法，推導了互擾修正方程;研究了九分力推力矢量測量誤差分析方法，並計算了推力矢量測量精度。
  3. The vector analysis method for strapdown north finding systems is introduced by which system error analysis is simplified

    提出捷聯尋北系統中的矢量分析方法，簡化了系統的綜合誤差分析。
  4. 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。
  5. 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。
  6. On the other hand, the electric field and intensity distributions of the he11 mode in the hollow fiber are calculated by using the exact solutions of maxwell equations based on the vector model, and the diffracted near - and far - field distributions of the he11 - mode output beam under the fresnel approximation are studies. we derive an analytical expression on the far - field distribution of the he n - mode output beam in free space and discuss its applicable condition. we also analyze and compare the differences between the he11 - and lp01 - mode output beams, and find that the near - field distribution of the lpoi - mode output beam is a gaussian - like one, but the near - field distribution of the he11 - mode output beam is a doughnut - like one, whereas the far - field distribution of both the lp01 - and he11 - mode output beams are a doughnut one

    此外，我們把中空光纖中lp _ （ 01 ）模（標量模型）和he _ （ 11 ）模（矢量模型）的場分佈以及它們各自的輸出光束的近場與遠場分佈進行了比較，發現兩種模式的輸出光束在近場分佈有很大的區別， lp _ （ 01 ）模輸出光束在近場是一個高斯分佈，而he _ （ 11 ）模輸出光束在近場是一個中空光束，在遠場兩種模式的輸出光束分佈是基本一致的，這正是由於在中空光纖中採用了弱波導近似以後所引起的誤差。
  7. The research on autonomous navigation and orbital keeping technology of geosynchronous satellites : selecting position vector in the inertia space and longitude, latitude, radial errors in the hill equation as state variables, the precision of orbit determination caused by track dynamic model error, sampling period, and sensor measurement and install error is analyzed

    同步衛星自主導航與軌道保持技術研究：分別選取慣性空間位置矢量和採用hill方程表示的經、緯、向徑誤差作為狀態量，分析軌道動力學模型誤差、采樣周期以及敏感器測量、安裝等誤差對定軌精度的影響。
  8. When the accelerating time of frequency is equal to zero, this paper discusses the gain of inventer - induction motor under the vector controlled and non - vect or c ontrolled. at the same time, this paper discusses it while the time of slope is no t zero. the m othod of the slippery and difference is introduced in this papaer for designing the system contained inv - m

    討論了頻率加速時間為零時，矢量控制和非矢量控制兩種情況的通用變頻器異步電動機的傳遞函數，同時也討論了斜坡給定時間不為零的通用變頻器異步電動機傳遞函數，介紹了滑差限定的方法，為設計含有inv - m的系統提高提供了理論依據
  9. Abstract : when the accelerating time of frequency is equal to zero, this paper discusses the gain of inventer - induction motor under the vector controlled and non - vect or c ontrolled. at the same time, this paper discusses it while the time of slope is no t zero. the m othod of the slippery and difference is introduced in this papaer for designing the system contained inv - m

    文摘:討論了頻率加速時間為零時，矢量控制和非矢量控制兩種情況的通用變頻器異步電動機的傳遞函數，同時也討論了斜坡給定時間不為零的通用變頻器異步電動機傳遞函數，介紹了滑差限定的方法，為設計含有inv - m的系統提高提供了理論依據
  10. Firstly, e - hmm is used to parameterize face image, the output likelihood of the e - hmm is encoded to form the input vector and is sent to the ann. by taking advantage of the discriminative training of ann, the weak discrimination of the maximum likelihood criterion can be improved, and the recognition performance can be improved by means of the learning ability of ann

    該混合識別網路用e - hmm的參數來描述人臉的整體性和局部細節性特徵，用e - hmm的輸出似然值序列組成ann的輸入矢量，利用ann的鑒別訓練能力來克服e - hmm的基於最大似然準則訓練演算法區分力較差的弱點，同時利用ann的學習能力來提高e hmm的識別性能。
  11. The steady - state errors of current closed loop system with pi current regulator in stationary and synchronous frames are compared using complex vectors. also, the corrector of rotor displacement control is studied by the root locus method

    應用復合矢量概念，對比了靜止坐標系和同步旋轉坐標系pi電流調節器組成電流閉環系統的穩態誤差，並用根軌跡法對轉子位移控制系統的校正環節進行了研究。
  12. And we analyzed the effect of the big gun erect axis incline trunnion axis is out of the vertical of the erect axis and the big gun axis is out of the vertical of the erect axis to measuring accuracy

    對矢量轉軸公式進行了推導，並利用它計算出了火炮豎軸傾斜、炮耳軸與豎軸不垂直、炮膛軸線和炮耳軸不垂直三種誤差對測量精度的影響。
  13. The error criterion is derived from rotation vector concept directly. in the coning motion environment, a class of rotation vector optimal algorithms are derived and evaluated with the rule of making sure of the minimum coning error. 3

    從旋轉矢量的概念出發，推導了演算法的精度準則，在典型的高動態環境? ?錐運動作為輸入條件下，以使錐誤差最小為原則，推導了旋轉矢量各階子樣演算法及其優化演算法，並與傳統的四元數演算法進行了比較； 3
  14. Meanwhile, advantages of the least calculation workload, the simple process, and the convenient for implementation are brought while switch states are described as space vectors in the - coordination system

    利用-平面內的空間矢量描述開關組合狀態，使得誤差函數的計算工作量小、過程簡單，易於實現。
  15. Sets up three - dimensional movement modal of towed - cable, the vector dynamic equilibrium equation is expanded under local coordinate, and numerically discreted by central difference on time and space through transforming eular angle

    摘要建立拖纜的三維運動模型，通過歐拉角的變換把拖曳線列陣微元段矢量動力平衡方程在局部坐標系下展開，在時間和空間上作中心差分數值離散。
  16. In this paper, a new control strategy based on the adaptive deadbeat voltage space vector is presented. this control scheme has a lower sample frequency and a smaller difference between switch frequency and sample frequency. it has many advantages, such as producing zero vectors organically, tracing exactly, non - shaking, etc. and its dynamic response is better

    對于電能質量調節器來講， pwm跟隨指令參考信號的控制性能在很大程度上影響著裝置的補償效果，本文選擇無差拍電壓空間矢量控制為系統控制策略，這種控制方法具有采樣頻率低，開關頻率與采樣頻率的差距小，能有機地產主零矢量、跟蹤精確以及無抖振等優點，動態響應快。
  17. Based on the semi - vector wave equation under cylindrical coordinate system, the mode distribution and complex propagation constant in bent waveguides were computed by a finite difference method with perfectly matched layer ( pml ) boundary condition

    摘要以柱坐標下的半矢量波動方程為基礎，採用基於完美匹配層（ pml ）邊界條件的有限差分方法，對彎曲波導進行模式求解，進而得到波導彎曲引起的輻射損耗。
  18. In order to improve dynamic performance of the control system in the assembly robot, according to acpmsm ( ac permanent magnet synchronous motor ) vector control model and the control idea about preview control, the paper presents a kind of control strategies that is composite of a primary pid ( proportion integral dif - ferenfial ) with a preview feed - forward compensation, its compensation is equivalent to linear combination of future adjacent difference, the simulation results show that it can not only improve the system tracking performance effectively, but also implement easily

    摘要為了提高裝配機器人控制系統的動態性能，依據交流永磁同步電機矢量控制模型，從預見控制的思想出發，提出了一種在原有pid基礎上外加預見前饋補償的控制方法，這種控制方法的前饋補償項取未來幾項目標值一階差值的線形組合，並模擬驗證了該控制方法對提高系統跟蹤性能的有效性和簡單可行性。
  19. Biology, etc. owing to many merits has not yet been used to measure parameters of gratings. the paper researches on the subject in view of current lack of it. the main tasks of the paper include : analyzing ellipsometric characteristics of gratings in detail with vector diffraction theory and ellipsometrics ; devising a reflective quarter wave plate at normal incidence according to some ellipsometric characteristics ; making use of normal simplex algorithm during ellipsometric inversion of gratings parameters, inversing ellipsometric parameters with gaussian noise of different standard deviations to simulate actually measured values with examples of isotropic metallic and anisotropic step gratings and testing that ellipsometry about gratings parameters is feasible with the range of certain precision ; discussing choice of incidence angle at length

    本論文的主要工作包括：結合光柵的矢量衍射理論和薄膜的橢偏理論，詳細分析了光柵的橢偏特性；並且根據一些橢偏特性設計出一款正入射反射型單波長1 4波片；在光柵參數的橢偏反演中，引入正單純形法作為反演演算法，分別以各向同性的正弦形金屬光柵和各向異性的階梯型光柵為例，在標準橢偏值的基礎上加入不同偏差的高斯噪聲來模擬實際的橢偏測量值進行反演，在一定精度范圍內得出滿意的光柵參數，說明光柵參數的橢偏測量是可行的；還就入射角的選取問題進行了一定的探討。
  20. There are mainly two type of algorithms used for spatial spectrum estimation : one is those based on bayesian maximum likelihood method, like the ml ( maximum likelihood ) algorithm, maximum entropy method and etc., the others are based on the spatial decomposition or projection of correlation matrix, this kind of algorithm include vector characterization method, music ( multiple signal classification ) algorithm, projection matrix method, etc. music is a classical spatial spectrum estimation algorithm that has a super high resolution and is widely used today, however, it cannot estimate doa of signals that are correlated

    空間譜估計的演算法大致分兩大類:一是基於極大似然估計和最大后驗概率估計統計理論的演算法，包括:極大似然估計法（ ml ） 、最大熵法等;另一類是基於對協方差矩陣進行子空間分解或投影的演算法，包括:矢量特徵法、多重信號分類法（ music ） 、投影矩陣法等。其中， music法是一種經典的空間譜估計主流演算法，具有超強的分辨性能，但它無法實現對相干信號進行測向分辨。
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