vector impedance 中文意思是什麼
vector impedance
解釋
矢量阻抗-
Finally, the impedance analytical expression for the solenoid coil with a finite - length ferrite core carrying time - harmonic current is obtained through the magnetic vector potential
最後由矢量磁位得到帶有限長磁芯的放置式通電圓柱線圈的阻抗解析表達式。 -
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。 -
Each unit of transformer is tested in accordance with the following items : winding d. c resistance test. measurement of turn ratio and calibiation of voltage vector relation. measurement of impedance voltage and load loss
直流電阻測試匝數比測量及電壓矢量關系的校定阻抗電壓及負載損耗的測量空載損耗及空載電流的測量工頻耐壓測試感應耐壓測試絕緣電阻測試局部放電測試外觀和尺寸的檢驗銘牌的檢驗等。 -
Using maxwell electromagnetic equations, by solving the boundary - value problem of magnetic vector potential, analytical expression to impedance increment of the solenoid coil in eddy current testing of the medium in half space was given. theoretical result was modeled in computer. results showed the validity and feasibility of the model
利用maxwell電磁方程組，通過求解矢量磁位的邊值問題得到了矢量磁位的解析解，進而導出了媒質上方放置式空心線圈的阻抗增量解析式，並對阻抗變化表達式進行單層板厚度和三層板間隙的檢測模型進行了模擬。 -
By selecting the voltage space vector of the voltage across the equivalent converter impedance as the control variables, the steady - state model of hvdc - vsc is developed. on this basis, a steady - state feedback linearization strategy is proposed, then, linear and decoupled control is realized using pi controllers and feedforward compensation
建立了以vsc等效換流阻抗上的基波壓降所對應的電壓空間矢量為控制量時hvdc - vsc的穩態模型，並根據所建立的穩態模型，提出了基於穩態模型的hvdc - vsc反饋線性化控制策略。 -
This dissertation brings forward a new method of modeling and simulation on interconnect ? fem - vfm, which combines finite element method with vector fitting method. we can get the scatter / admittance / impedance ( s / y / z ) parameter by fem in frequence domain, gain the equivalent spice circuits of interconnect structure by vfm, and extract the circuit ’ s parameters which are used to analyze in time domain. this method lets the simulation not only contain the information of pcb ’ s structure but also have a sustainable computing speed
首先通過電磁場數值分析方法?有限元法（ fem ）對互連結構進行模擬分析，而得到的散射/導納/阻抗矩陣參數（ s / y / z矩陣參數） ，然後通過矢量擬合方法（ vfm ）把s / y / z矩陣參數轉化為等效spice等效電路模型，並且提取出電路參數，完成了頻域到時域的轉換，最後使用電路模擬器進行時域模擬，從而開發出了一系列高速數字pcb板設計規則。
分享友人