矢量磁通 的英文怎麼說

中文拼音 [shǐliángcítōng]
矢量磁通 英文
vector flux
  • 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
  • 磁 : 名詞1. [物理學] （磁性; 能吸引鐵、鎳等的性質） magnetism 2. （瓷） porcelain; china
  • 通 : 通量詞（用於動作）
  1. Polarimetric synthetic aperture radar ( polsar ) investigates the transverse vectorial nature of plane em waves and provides the complex scattering matrix of a scatterer. scattering polarimetry is sensitive to the shape, orientation, and dielectric properties of scatters

    極化合成孔徑雷達（ polsar ）研究電磁波的矢量特徵，通過測量和分析目標的極化散射特性，獲取目標的介電常數、物理特性、幾何形狀和取向等方面的大量信息。
  2. 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。
  3. In this section, we also designed 2d subwavelength multilevel ( 2 -, 4 -, 8 -, etc. level ) columned stairstep grating with coned spatial profile to reduce reflection

    我們也通過矢量衍射理論分析了多臺階二維亞波長具有圓錐面形的網格光柵的電磁場衍射特性。
  4. Fluxgate magnetometer is a kind of vector magnetometer which has the ability of measuring the components of magnetic field directly. the fluxgate instrument is variometer based on magnetization non - linearity of " soft " magnetic material

    磁通門磁力儀是直接測量地磁場分量的矢量磁力儀，是一種基於「軟」磁材料磁化特性的非線性的地磁相對記錄儀器。
  5. From the model, we can solve and gain the values and change orders of charging current, charging voltage, discharging current, discharging voltage and inductive current. after that, the electromagnetic fields can be created from two circuits " currents, and their magnetic rector and flux can be simulated from ansys solver

    用ansys multiphysics模塊求解出充電電流、充電電壓、放電電流、放電電壓和感應電流以及這些參數隨時間變化的規律：然後利用兩個迴路的電流耦合出電磁場，並模擬出磁矢量、磁通密度。
  6. 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。
  7. By associating the spin vector of the inhomogeneous generalized heisenberg ferromagnet with the binormal to a moving curve in minkowski space, the corresponding equivalent coupled inhomogeneous integrable equation is present

    通過將非均勻推廣的海森堡鐵磁鏈的自旋矢量取為閔可夫斯基空間中曲線的次法矢量，得到相應的耦合的非均勻可積方程。
  8. 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。
  9. Maxwell ' s equations conserve certain properties ? the magnetic field intensity, the electric displacement field and the poynting vector that describes the electric flux of an electromagnetic field

    麥克斯韋方程中有某些特性是恆定不變的磁場強度、電位移場以及描述電磁場電通量的坡印廷矢量。
  10. Using the vector potential, the expression for calculating inductance of air - cored solenoid coil is derived in the dissertation. and the calculating methods of function t in the calculating expression are given for the convenience of the calculation of inductance while the precision is not strictly requested

    利用矢量磁位a直接推導出了通電空心圓柱線圈電感的計算表達式，給出了求解計算式中函數t的計算方法，以方便精度要求不高時的電感計算。
  11. The control tactics of space voltage vector are investigated, and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward. by analyzing the current hysteresis control, the relation between switch frequency, and hysteresis bandwidth and input inductance of pwm rectifier is deduced. by applying instantaneous power theory, the principle of pwm rectifier power control is analyzed, and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized, and the simulation results prove that it is correct

    對常用空間電壓矢量控制策略進行分析，提出了給定參考矢量所在區間判斷的簡化方法，以及電壓矢量作用時間的求取方法；分析了電流滯環控制策略，推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系；應用瞬時功率理論分析pwm整流器功率控制原理，通過虛擬磁鏈估計有功功率和無功功率，用matlab實現了直接功率控制，並驗證了該控制方法的正確性。
  12. This paper proposes a new method for sensorless vector control of induction motors, which is based on the flux observer theory and the adaptive control theory

    本文根據磁通觀測器理論和自適應控制理論，提出了一種無速度傳感器矢量控制調速新方法。
  13. After the analysis of the state of converter switches, the voltage space vector is received. on the basis of hexagon stator flux trace method of traditional direct torque control, by changing the regulation of stator flux, hexagon and approximate round trace of stator flux can be got when using different voltage space vector. the fast regulation is realized when three - value regulator is used to adjust torque

    通過對逆變器開關狀態的分析進而得到電壓空間矢量，並且論述了電壓空間矢量與轉矩和磁鏈之間的關系，使用兩點式調節方法對定子磁鏈進行調節，實現六邊形磁鏈軌跡和圓形軌跡方案，對轉矩採用三值調節器進行調節，以實現轉矩的快速調節。
  14. As a non - linear and multi - coupled system, the control of the ac induction motor ( acim ) has long been challenging. thanks to the vector control algorithm, acim can offer the same control capabilities and dynamic performance as traditional high - performance dc motors. with the vector control algorithm, the stator current of acim can be expressed in two orthogonal axes, and thus the rotor flux part and torque are de - coupled

    交流感應電機難于控制是因為它是一個非線性、多耦合的系統，矢量控制演算法通過坐標變換將異步電機的定子電流分解為轉子磁鏈方向和與之垂直方向的兩個分量分別進行控制，從而實現轉子磁通和轉矩的解耦，使得交流感應電機的動態性能可以和直流電機媲美。
  15. In this thesis, studies are made on the problem of time - harmonic electromagnetic fields excited by an arbitrary current dipole in spherical conductor. the problem is presented in eddy - current nondestructive test and geophysical prospecting. under the condition of magnetic quasi - static state, the boundary - value problem about modified magnetic vector potential is solved and the analytical solution is obtained

    本論文針對渦流無損檢測和地球物理勘探領域用到的球導體中時諧電流元的電磁問題做了研究，在磁準靜態近似下，求解了修正磁矢量位的邊值問題，獲得了問題的解析解，並利用通用有限元分析軟體做了數值驗證。
  16. 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。
  17. The solving steps are as follows : the field is divided into three regions by the cylindrical surface of the finite - length cylinder and the location of the delta - coils. because " the surface current source is placed at the interface, the non - homogenous restricted equation on the magnetic vector potential is transformed into the homogenous helmholtz equation. by using the method of separation of variables to solve equation and according to the interface conditions and the condition at infinity to determine the unknown constants, the expressions for the magnetic vector potential of the three regions are solved out

    在求解過程中，假定放置式圓柱線圈是由無窮多個對稱圓環線圈密饒而成，首先求解含有有限長磁芯的通電對稱圓環線圈的電磁場：以有限長圓柱磁芯的側面和圓環線圈所在圓柱面為分界面將場域劃分為三個小區域，由於場源放置在內邊界面上，使得關于矢量磁位的非齊次約束方程轉化成齊次亥姆霍茲方程，利用分離變量法求解，根據分界面鄭州大學碩十研究生畢業論文摘要條件以及無限遠條件確定待定常數，從而得到各場區矢量磁位的表達式。
  18. The boundary value problem on the magnetic vector potential a is derived by introducing the magnetic vector potential a and using maxwell ' s equations

    通過引入矢量磁位a並利用麥克斯韋方程組推出了以矢量磁位a為求解對象的邊值問題。
  19. Then, using the principle of superposition and integrating the delta - coils, we can obtain the expressions for the magnetic vector potential caused by the cylindrical coils carrying current

    然後，應用疊加原理，並對圓環線圈進行積分，求得各場區通電圓柱線圈的矢量磁位表達式。
  20. And the expression of magnetic flux density b is got by making use of the relation of magnetic vector potential a and magnetic flux density b. finally, the equation of the magnetic flux lines is given by way of describing the distributing of the magnetic field

    通過求解該邊值問題得到了相應的矢量磁位a的解析表達式，然後利用矢量磁位a和磁感應強度召的關系求得了磁感應強度b的解析表達式。最後為了更直觀地描述磁場的分佈給出了相應的磁力線方程。
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