initial vector 中文意思是什麼
initial vector
解釋
起始向量-
For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。 -
Initial vector and iterating control in the solution to eigenvalue and eigenvector of a matrix by the matrix iterarion method
乘冪法求矩陣特徵向量與特徵值的初始向量及循環控制 -
Initial vector and iteration control in the matriy iteration method
矩陣迭代法求結構自振特性的初始向量及循環控制 -
This algorithm easily escapes from local optimal solution, have high searching efficiency, simple structure, convenient use. aiming at iteration, optimization and matlab optimization toolbox having low precision and difficulty to choose initial vector on acquiring nonlinear equations ’ solutions, equations ’ solution problem is translated into genetic algorithm optimization problem. nonlinear equations ’ usual genetic
針對迭代法、最優法、 matlab最優化工具箱求解非線性方程組中存在求解精度不高及初始矢量難選等問題，將方程組求解問題轉化為遺傳演算法函數優化問題，建立了非線性方程組通用的遺傳演算法解法，並將其用於汽車滑行試驗數據處理中。 -
We start with the theory of vector quantization, and come on with the application of of v. q. technics on image processing. fist we developed a codebook creation algorithm based on the partial distortion theorem, which has greatly improved the quality of the initial codebook
我們採用理論與應用相結合的辦法，從矢量量化的一些基本問題入手，克服其明顯的缺點，輔助以其它高效的手段來使矢量量化技術從純理論的研究走向實際的應用。 -
In addition, the thesis has gained a little innovative achievements which are differ from other scholars, such as classifying the carrying objects of environmental carrying capacity, establishing the index system of environmental carrying capacity, unifying dimentions, modifying the initial coefficients and making use of hierarchy and vector analytical method to analyze environmental carrying capacity quantificationally
本文在環境承載力承載對象的分類、環境承載力指標體系的構建、統一量綱的方法、初始權重的修正以及採用層次矢量分析法量化研究環境承載力等方面進行了不同於其他學者的新嘗試。 -
This strategy has many advantages : solving the problems that the system is unsteady under super - synchronization ; improving power factor of stator ( it is unity relative to that of rotor ) ; no rotor position sensor and no initial position measurement, easily building up doubly fed speed adjustment system with speed sensorless because adjusting speed is taken in the rotor coordinate and rotor current vector fixing is implemented
該方案由於引入了定子電流勵磁分量的閉環控制，使系統同時具有轉速和勵磁調節兩個調節通道，具有如下優點：一、解決了超同步工作工況不穩定的問題；二、提高了定子側的功率因數（與轉子側功率因數為1相比） 。三、由於速度調節在轉子坐標系下進行，並以轉子電流矢量定向，所以無須轉子位置傳感器，也不用檢測初始位置，易於組成無速度傳感器雙饋調速系統。 -
The key point of this method is that the error of initial value of baseline vector must be very small, for example, less than 0. 33 cycles
該方法不涉及「周跳的探測及修復」和「整周模糊度的確定」等問題。 -
The kalman filter theory is introduced and the dynamic error vector equation of the initial alignment is derived at the first. using velocity error as exterior value of observation, maneuverable characteristic that is influenced with system ' s observability and its degree is studied at length by do amount of simulations and experiences. choosing output error of accelerometers and angle error of attitude as observation respectively and system observation model is derived, which is based on analyzing kalman filter theory
首先介紹了卡爾曼濾波理論及相關技術，建立了系統卡爾曼濾波的狀態方程和觀測方程；首先採用速度誤差作為觀測值，詳盡的研究了系統機動特性對可觀測性和可觀測度的影響，並做了大量模擬實驗：通過對濾波原理的分析研究了影響的原因；分別選用加速度計輸出誤差和轉臺輸出姿態角誤差作為外部觀測值，推導建立它們的觀測模型，並通過模擬證明了分析結論的正確性。 -
Based on the initial parameters format of the distortion theory in this paper, the element stiffness matrix and the corresponding equivalent nodal force vector subjected to uniformly distributed load is developed
在初參數格式的基礎上，本文又推導出考慮剪切變形的畸變分析的剛度矩陣及等效節點載荷列陣，獲得便於實際應用的畸變分析剛度法。 -
Another 20 kinds of non - designed contact points are given for the first time. contact determining algorithm of all the above contact types is given using z - buffer algorithm for 3 - d observation, and simulation results show high accordance with results of vector - associated method. simulation for non - designed contact mode with random initial conditions has been done too, and statistics from the simulation indicates that it is important to predict non - designed contact points in practical rvd efforts
全文的工作包括以下幾個方面的內容: 1 .建立了周邊式對接機構的復雜幾何外形的數學描述，描述了對接初始條件范圍內，兩對接機構相互接近、捕獲過程中可能出現的20種設計接觸模式，並針對初始接觸點首次提出20種非設計接觸模式;利用計算機圖形學中可見面判別的z -緩沖演算法原理，給出了所有接觸模式的檢測演算法，該演算法的模擬結果與輔助向量法高度一致，驗證了演算法的有效性;進行了300組確定首次接觸點的隨機模擬，統計結果表明，在飛船上實時進行非設計接觸模式的預測是非常重要的。 -
The gradient vector can be used to construct the initial errors
這時可以對梯度向量本身進行分析，或者用這個梯度向量構造初始誤差場。 -
In tracking section, we still adopt the snake to converge on the object contour by improving the energy functions, in the tracking frame, initial points are acquired by calculating the average inter - frame motion vector of the block, because all snaxels have approximately the same motion vector as the moving object is proposed to be rigid and have no salient deformation
跟蹤部分：根據剛體運動的特點（運動區域具有一致性和不發生較大的形變）求出運動目標的平均位移矢量，與在分割部分求出的目標的輪廓點的位置相加，作為下一幀跟蹤的初始輪廓點，結合改進的snake能量函數使其更精確地收斂到運動目標輪廓上，達到準確跟蹤的效果。 -
Utilizing the interface, all most aspects of chua ' s circuit, including circuit ' s parameters, initial conditions, eigenvalues, vector field, movement track, and so on, may be fully and directly reflected. on the one hand, it solves existing situation of no - directly perceived nature and complexity in researching all aspects of chua ' s circuit ; on the other hand, investigators can still more conveniently study the circuit
4 ）設計了一個用戶界面，可對chua混沌電路的參數、初始條件、特徵值、矢量場、運動軌跡等各個環節進行全面、直觀的反映，解決了目前研究chua混沌電路各環一竹的不直觀性和計算電路參數的復雜性，可使研究者更進一步方便的研究電路。 -
The motion vector of adjacent macroblocks ( spatial or temporal ) is used as the initial searching vector of the current macroblock, to search a multistage in an involute - like scanning
在大多數情況下，圖像中運動的變化在圖像內和圖像間往往是連續的。 -
Use the magnetic vector for the observation information, the paper estimate the location and rate of the satellite, analysis of simulation results and the sources of error. to further enhance navigation accuracy, the paper study the unscented kalman filter, compare with the extend kalman filter. in the same initial conditions of the extend kalman filter, we do the simulation
其次，基於磁環境模擬系統的測量數據，本文研究了擴展卡爾曼濾波演算法，建立了衛星的運動學和動力學方程，以地磁場矢量為觀測信息，對衛星位置速度進行了估計，並分析了模擬結果及誤差來源，為了進一步提高導航精度，本文又研究了unscented卡爾曼濾波演算法，給出了原理及步驟，並與擴展卡爾曼濾波進行了比較分析。 -
Using the hankel transform, the state vector equations are reduced to a set of ordinary differential equations. according to the theory of ordinary differential equations and the cayley - hamilton theorem, an analytical solution of the problem is presented in the form of the product of initial state vector and transfer matrix, which is given for the four distinct eigenvalues each. applications of the solutions are discussed
利用hankel變換，將狀態變量方程轉化為一組常微分方程組；進而根據常微分方程組解的理論和cayley - hamilton定理，得到了以狀態變量和傳遞矩陣乘積表示的單層壓電壓磁彈性材料的解析解；並討論了4種不同特徵根的情況以及解的應用。 -
Linear singular vector represents the direction that initial errors increase fastest during the validity period of tlm. lsvs can be used to construct initial errors in an ensemble prediction system
對于某一給定的范數，在所考慮的時間段內，線性奇異向量代表初始誤差線性增長最快的方向。 -
The initial position can he measured accurately through controlling a given position current vector of motor stator
提出了一種電機初始位置的確定方法，通過輸出給定位置的定子電流矢量的方法，可以精確檢測出電機初始位置。 -
After the ls - cma captures a cm signal, the relationship between the weight vector and the do a of the other signals is derived. initial weight vectors are set hi the directions of the other cm signals by lcmv algorithm. thereafter, the blind beamforming for the other cm signals can also be realized
首先，我們導出了恆模演算法收斂于任意一個恆模信號后，其恆模演算法的權向量與其它用戶波達角之間的關系，然後在不同用戶的波達方向上形成初始增益，進而對所有的用戶實現波束形成。
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