vector component 中文意思是什麼
vector component
解釋
分矢量-
We presented a novel method of searching for similar fragments of 3d curves, with this method, a hash vector is associated with each fixed - length fragments of 3d sherd. each vector consists of low frequence component of fourier - like spectrum for the distance between profile curve and the centroid
討論了基於hash矢量和fourier變換的輪廓曲線匹配方法，在匹配中不要求一段輪廓線與另外一段輪廓線完全匹配，而是把它們分成很多子段，再用這些子段來進行匹配。 -
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。 -
And more aperture extension is achieved in this novel esprit - based two - dimensional angle estimatio n scheme using a uniform rectangular array of vector hydrophones spaced much farther apart than a half - wavelength. this proposed scheme and the attendant vector - hydrophone array outperform a uniform half - wavelength spaced pressure hydrophone array with the same aperture and slightly greater number of component hydrophones by an order of magnitude in estimation standard deviation
結合實際的應用情況，對矢量水聽器構成的陣列進行了初步的探討，利用本文前面部分所分析的基於單矢量水聽器的方法，實現了陣元間距突破半波長上限的局限，並解決了角度估計的循環模糊問題，以較小的硬體代價和運算代價實現陣列孔徑的擴展，提高估計精度。 -
The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,
基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。 -
What ’ s more, the precision of thrust vector measurement is also calculated, depending upon the error analysis of nine - component model. a large - scale srm hot test is successfully done on the nine - component thrust vector stand. and the satisfactory results validate that the nine - component model is reasonable and the nine - component thrust vector stand design is feasible
在九分力推力矢量試車臺上成功地進行了一次大型固體火箭發動機地面熱試車，得到了滿意的試驗結果，驗證了九分力模型的合理性和九分力推力矢量試車臺設計的可行性。 -
In this paper, several scheme of vscf is compared firstly, of which gets doubly - fed generating mode. doubly - fed vscf wind power generating system uses a doubly - fed induction generator, which rotate speed can be able to change with wind turbine, and it ensures a constant - frequency output, by controlling the frequency of current input into rotor windings. in vector trans control system, the control of stator active power and the control of stator reactive power can be essentially decoupled, and the former is via torque component and the latter is via exciting component of stator current
本文首先比較了幾種變速恆頻方案，從中選擇了雙饋式變速恆頻方案；它運用雙饋電機的工作原理，允許發電機轉速變化，而在電機轉子側接入低頻勵磁電流，通過控制該電流的頻率，保證雙饋電機定子輸出的頻率恆定；再結合矢量控制技術，通過調節轉子電流來控制定子電流的轉矩分量和勵磁分量，相應獨立地控制發電機輸出的有功功率和無功功率。 -
The article illuminates mainly two segments color - separation model based on three dimensions, gives a model conception on a knowledge base of unification technology and analyse and design digital prepress system from the whole on the problem of systemic requirement analysis. second, the article brings forward new data compress method based on memory stream and sets up new data structure to realize undo and redo methods based on analyzing all kinds of datas referred to on systemic based construction. because printing and dyeing cad system deals with many arithmetics on graphics ans image and production technics, the article illuminates vector conception, expatiates gray graphic vectorization and brings forward to graphic component ' s conception to enhangce the systemic stability and manipulating speed and improve graphic transmission
在印染cad系統的需求分析問題中，結合目前印染行業的發展和實際cad系統的整體構架，著重闡述了基於三維空間的二段法分色模型，提出了一體化工藝知識庫這個模型的概念，對數字印前系統做了整體的分析、設計在系統的底層架構問題上，著重分析了cad系統涉及到的各類數據，提出一種新型的基於內存流的數據壓縮方法，同時設計了自己的數據結構，用以實現系統的undo 、 redo操作，由於整個系統涉及眾多的圖形圖像演算法和實際工藝，為了提高系統的穩定性和操作速度，以及增強圖像的網路傳輸功能，在部分演算法中採用了矢量的概念，著重講解了灰度圖像矢量化，並且提出了圖像組件這一嶄新的概念。 -
Based on the adaptive interference canceling theory and the concept of space vector, an adaptive fundamental positive / negative sequence component and harmonic component detecting method is developed. due to the close loop structure, this method has quite good robustness, and can meet the requirement of the asymmetrical control of hvdc - vsc well
運用自適應干擾對消原理和空間矢量的概念，提出了一種基波正序分量、基波負序分量及諧波分量的自適應檢測方法，並進行了詳細的理論分析，為研究hvdc - vsc的不對稱運行控制奠定了基礎。 -
Space vector control according as ac induction motor two - axis theory speed separates the stator current into two components. one is the torque component ; the other is the flux component. a structure similar a dc machine structure where torque and field can be controlled independently is given
矢量變換控制是以交流電動機的雙軸理論為依據，在同步旋轉坐標系中把定子電流矢量分解為兩個分量：一個分量與轉子磁鏈矢量重合，稱為勵磁電流分量；另一個分量與轉子磁鏈矢量垂直，稱為轉矩電流分量。 -
This thesis analyzed various error resources in gps surveying and advanced appropriate correction measures ; it introduced theory and method that estimate parameter in reliability study, and then, deduced adjustment mathematic model of gps network ; based on analyzing characteristics of reliability study of gps network and outlier analysis, it carried profoundly out study on issue about reliability of gps network, deduced and summarized target of reliability of gps network, including redundant observation component of gps baseline vector and inside & outside reliability index, advanced a theory about reliability of gps network based on correlative analysis, and summarized methods that improve reliability of gps network ; it worked out a software of reliability analysis about gps observation, which made reliability analysis automatic and convenient
論文分析了gps測量中的各種誤差來源，提出了相應的改正措施；介紹了可靠性研究中參數估計的理論和方法，進而推導出gps網平差的數學模型；在分析了gps網可靠性研究和粗差分析特點的基礎上，對gps控制網可靠性問題進行了深入的研究，推導總結出了gps網可靠性指標，包括gps基線向量的多餘觀測分量、內部可靠性和外部可靠性指標，提出了基於相關分析的gps控制網可靠性理論，總結出了提高gps控制網可靠性的措施；編制出了gps觀測數據可靠性分析軟體，使可靠性分析自動方便。 -
To reduce the number of design variables, the sensitivity of both natural frequency and mode shape vector to component geometry parameters were derived respectively
為優選設計變量，分別推導了固有頻率和振型矢量對其幾何參數的靈敏度公式。 -
Optical vector - matrix multiplier is a kind of integrated optical device and it is necessary to study the effect of the diffraction. based on the scalar diffraction theory, the transformation of gaussian beam by each component of the vmm is calculated by collins formula, and the distributions on the slm and ccd are investigated
本文在標量衍射理論體系下，應用柯林斯（ collins ）公式對光學矢量-矩陣乘法器的光場分佈進行模擬計算，得到slm和ccd接收面上的光場分布圖。 -
The unique heat radiation of infrared image is generated from subcomponents. this paper analyses the natural feature of infrared image and the relationship between the shape and orientation with eigen vectors, gives the measure to classify infrared image based on object position to improve ability of compatibility in object recognition, moreover, applies the independent component for sub - region segmentation to construct new infrared image eigen vectors. the image features are processed by a support vector machine, and transform the binary svm to multi - object classifier
文中在傳統紅外熱圖像特徵量的基礎之上，通過分析紅外熱圖像自身特性以及它的形成與其自身姿態的關系，提出了對目標物體紅外熱圖像基於目標姿態的子分類，來提高目標識別中對姿態的容忍度；同時根據紅外目標子部件對圖像影響的統計獨立性，使用獨立元的方法對目標紅外熱圖像進行了子區域分割，形成了新的紅外圖像特徵量。 -
Different from other rank reduction methods, such as pca ( principal component analysis ) and vq ( vector quantization ), nmf ( nonnegative matrix factorization ) can get nonnegative, sparse basis vectors which make possible of the concept of a parts - based representation
與pca （主分量分析）和vq （矢量量化）等降維演算法不同， nmf （非負矩陣分解）演算法能夠分解出非負的，稀疏的特徵矩陣和編碼矩陣，能夠提取原始數據向量的局部特徵，使基於局部特徵進行分類的聚類演算法更容易實現。 -
This paper studies an ac servo system with the permanent magnet synchronous motor ( pmsm ) as the executive component. the disadvantages of the conventional methods of ac servo system are demonstrated by computer simulation and by analyzing the mathematical models of the pmsm and the vector decoupling control strategy. then, an improved double - pi combined with variable structure servo controller is proposed
通過對永磁同步電動機的數學模型和矢量解耦控制策略的理論分析，以及基於雙pi結合單p位置調節的伺服系統的模擬實驗，揭示出經典的伺服控制方法的缺陷，並提出了一種改進的雙pi結合變結構的三閉環調節的伺服控制器設計方案。 -
Integrating kernel principal component analysis with least squares support vector machines for time series forecasting problems
基於核主成分分析與最小二乘支持向量機結合處理時間序列預測問題 -
Application component layer envelops the parallel algorithms of matrix - vector operation to offer users high - level interfaces ; the other three layers implement data abstraction 、 data partition and parallel mechanism respectively, and every layer has specific class and interface definition
其中應用組件層把矩陣向量運算的并行演算法封裝成類組件，為用戶提供了高層次的介面;另外三層分別實現數據抽象、數據劃分和并行機制支持三方面功能，每一層都有具體的類組件和明確的介面定義。 -
The asynchronous motor is widely used for its simple construction, ruggedness, high working reliability, relatively low cost, and high environmental adaptability. it is suit for the direction of high voltage, high speed and large capacity. vector control is its ideal speed modulation method. the harmonics of three - level inverter are less than the traditional two - level inverter ’ s, and it is convenient to realize high sinusoidal voltage output. the maximum voltage strength which each electric component bears is small, and it is easy for three - level inverter to realize large capacity. the research on the asynchronous motor vector control based on the three - level inverter is one novel work
異步電機結構簡單、堅固耐用、運行可靠、成本低、環境適應性強，容易向高壓高速和大容量方向發展，獲得了廣泛應用，矢量控制為其理想的調速方法;三電平逆變器輸出端諧波少，有利於實現輸出電壓的正弦化，且單個開關管承受的最大電壓小，適合向高壓大容量方向發展。對基於三電平逆變器的異步電機調速系統開展矢量控制研究，是一件有意義的工作。 -
In the paper, the principle and actualizing means of spatial vector control have been systemically discussed and the control software has also been designed. the magnitude of both the rotor flux and the current in torque component have been estimated by using a flux observer, which is developed based on field orientation control principle. the results show that the observer has a good feature due to its speed being calculated without speed sensor or additional hardware
本文對矢量控制的原理、控制方法以及控制實施策略進行了較為系統的分析與研究，利用速度間接觀測理論，建立了異步電機的磁通觀測器，電機的定子磁通和電流的轉矩分量可以通過磁通觀測器估算出來，從而得到電機的轉速，並由此建立了異步電機無速度傳感器矢量控制的理論數學模型和相應的控制演算法，在此基礎之上，利用工程中常用的電機專用dsp晶元tms320lf2407作為處理器，對異步電機進行變頻調速控制。 -
The study shows that the nine - component model and nine - component thrust vector stand can improve the precision of thrust vector measurement greatly
研究表明，九分力模型和九分力推力矢量試車臺提高了推力矢量測量的精度，適合用於測量大型固體火箭發動機的推力矢量。
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