磁通量反相 的英文怎麼說

中文拼音 [cítōngliángfǎnxiāng]
磁通量反相 英文
phase flux reversal
  • 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）
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 通量 : [物理學] flux; shower
  1. This text describes the project basic principle and system structure and capabilities of production equipment for mechanism and electric, according as require of blast furnace automation, analyzes the chemical reactions in blast furnace by principle, according as mass and energy balance principle build on process models and technology calculate, according as process optimization principle build on process system optimization models, and technology calculate, as one time, expert system command any model. the expert system contains a knowledge base, which already represents the concentrated know - how of blast furnace operation, gathered from many installations world - wide

    本文在介紹了項目的基本原理和系統構成以及相關的生產工藝的基礎上，根據高爐過程優化的要求，從機理上分析了高爐冶煉過程的化學反應，並依據質量能量平衡原理建立了工藝模型和技術計算，按照優化原理建立了過程系統優化模型，並在專家系統的調度下協調工作。系統還包括知識庫，它總結了普通高爐操作的理論知識和控制理念，同時，結合釩鈦磁鐵礦的冶煉知識，形成具有攀鋼冶煉特點的知識庫。
  2. In the proposed technique the bemf waveform of bldcm need to be measured in advance at first, through computer simulation and frame transformation, the optimum q - axis current command is achieved. in order to minimize the torque ripple, the d and 0 - axis current command should be zero. furthermore, through reference frame transformation from dqo - axis to abc - axis, we can get the optimum current command in static abc reference frame

    在這種控制方法中首先測量出電機的實際反電動勢波形，然後通過計算機擬合和坐標變換，求得產生恆定電磁轉矩所需的q軸電流，令i _ d ~ * = i _ 0 ~ * = 0 ，通過坐標變換，得到三相靜止坐標系a - b - c下的參考電流i _ a ~ * ， i _ b ~ * ， i _ c ~ * ，利用電流滯環控制來產生pwm信號，由於這種控制方法中電流不會突變，從而可以較好的抑制轉矩脈動。
  3. One of these patches has normally directed flux ( in the same direction as the overall dipole field in that hemisphere ) ; the other has the opposite, or reversed, flux

    斑塊之一具有正常方向的磁通量（與該半球整體的偶極方向相同） ；另一個斑塊的通量方向則是相反的。
  4. Based on the analysis of the control theory of the dtc of doubly fed induction machines, in this paper, two control schemes are proposed : the least mode of rotor current and the stator power factor adjustable mode. in the first control scheme, we may make the rotor voltage the same or opposite phase with the rotor current by throwing suitable rotor voltage vector

    在第一種控制方案中，通過施加轉子電壓矢量，使轉子電流與轉子磁鏈垂直，轉子勵磁全靠定子電流，即可保證轉子電流和轉子電壓同相或反相，從而實現了轉子側功率因數為1 ，可減小轉子側變頻器的容量。
  5. The contributions done are as follows : according to the mathematical model of doubly fed motor and the theory of vector control, a unit power factor of rotor control scheme is proposed. in the doubly fed adjustment system, in order to control magnetic torque of motor this scheme is designed by controlling the reverse direction between rotor voltage and current to keep the vertical direction between rotor current and flux. it is known from theoretical analysis that for partly decoupling this scheme is only effective under sub - synchronization speed, but not control the system and obtain steady state since speed adjustment system ca n ' t adjust the magnitude of rotor flux under sup - synchronization

    而傳統的無速度傳感器雙饋調速矢量控制系統，由於採用磁鏈定向方法，在同步速附近存在較大的工作死區，針對上述問題，本文做了如下的研究工作：本文從雙饋電機的數學模型出發，根據矢量控制的基本原理，提出了一種轉子側功率因數為1的雙饋電機矢量控制方案的設想，即在雙饋調速時採用轉子電流定向的方法，並控制外加轉子電壓與轉子電流始終反相，以保持了轉子電流與轉子磁鏈矢量垂直，通過控制轉子電流的大小來達到控制電機電磁轉矩的要求。
  6. In succession, tini thin film is deposited on single - crystal silicon substrate using optimized parameters utilizing sputtering, and its transformation temperature ( a * ) is 72 ? indicated by dsc curve after being annealed in an ultra - high vacuum ( uhv ) chamber. in addition, the composition of the silicon - based tini film was analyzed by an energy dispersive x - ray spectroscopy ( eds ), and the ti content in the film is approximately 51at %

    按照改進的工藝參數，在單晶硅襯底上濺射-淀積了tini薄膜，並進行了超高真空退火， dsc法測得其馬氏體逆相變峰值溫度為72 ，利用能譜分析（ eds ）技術測得其ti含量約為51at ，通過對非晶tini薄膜與單晶硅襯底之間的界面進行eds及x射線衍射（ xrd ）分析，發現在用大功率（ 2000w ）直流磁控濺射法制備tini薄膜過程中，存在ti 、 ni與si的雙向擴散，發生了界面反應，並有三元化合物ni _ 3ti _ 2si生成。
  7. Remarkably, the temperature must be limited between softening point and solidification value, at which the bond can get perfect fluidity and stickiness. effects of bond content and pressure on magnet product during heating - pressing process are the same with effects during common - pressing process. fourthly, it is more than 250 hours before magnet is eroded when it is coated with lacquer by way of cathode electrophoresis

    溫度對溫壓效果影響明顯，應當選擇在粘結劑軟化點以上、固化反應前的某一點，保證粘結劑具有適當的粘度和良好的流動性；與普通壓制工藝相同，溫壓工藝制備的粘結磁體密度和磁性能均隨壓制壓力的增大而提高，磁體性能和磁粉體積分數隨粘結劑含量變化的規律一致。
  8. By using x - ray diffraction ( xrd ) and vibrating - sample magnetometer ( vsm ) we find about 260 c is the critical temperature to complete the transformation of ordered anti - ferromagnetic fct phase

    通過x光衍射和振動樣品磁強計測量我們發現260大體上仍然是形成反鐵磁相的臨界溫度。
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