permanent current 中文意思是什麼

permanent current 解釋
持恆電流
  • permanent : adj. 1. 永久的，不變的，耐久的；持久的，經久的。2. 常務的，常設的 （opp. temporary）。n. 電燙發 （＝permanent wave）。adv. -ly
  • current : adj. 1. 通用的，流行的。2. 現在的，現時的，當時的。3. 流暢的；草寫的。n. 1. 水流；氣流；電流。2. 思潮，潮流；趨勢，傾向。3. 進行，過程。
  1. Most conventional permanent magnet motors can accept an armature current three or four times the rated current.

    大多數普通的永磁式電動機能承受34倍額定值的電樞電流。
  2. The thesis is devoted to exploiting a permanent magnet synchronous machine ( pmsm ) for the parallel hybrid electric vehicle ( phev ). three parts are included as follows : at first, in the electromotor state, the current control strategies of pmsm are determined. giving the elementary method for solving the contradiction between enhancing the pmsm ' s flux - weakening capability in the electromotor state and reducing the pmsm ' s connatural adjustment ratio in the dynamotor state

    本課題的研究工作主要圍繞開發一臺並聯式混合動力電動汽車（ phev ）用永磁同步電機（ pmsm ）展開，所作的工作主要包括以下幾個部分：首先，確立了phev用pmsm電動機運行狀態時的電流控制策略，針對pmsm在電動機運行狀態時提高弱磁擴速能力和在發電機運行狀態時減小固有電壓調整率的相互矛盾，提出了初步的解決方法。
  3. The magnetic mechanical engineering technology is a new high - level technology in the current world, which uses the permanent magnetism materials to engage in the research, development and production of the permanent magnetism effect parts, including the magnetization parts, magnetism - droved machinery, magnetoelectricity machinery and so on

    磁機械工程技術是當前世界新興的高水平的一項學科技術，是應用永磁材料從事磁化器件、磁驅動機械和磁電機械等永磁效應組件的研究、開發、生產；並逐步實現技術產業化、產品社會化的系統工程。
  4. Permanent magnet synchronous motor ( pmsm ) drived by triphase sinusoidal current is research object in this paper. its mathematics models in several coordinate are set up, controlling principles of flux linkage and torque are discussed under dtc and the block diagram of pmsm with dtc is presented

    本文以三相正弦波驅動的永磁同步電機（ pmsm ）為研究對象，建立了其在不同坐標系下的數學模型，並深入探討直接轉矩控制中永磁同步電機的磁鏈和轉矩的控制思想，給出控制方案。
  5. In order to improve the efficiency of the permanent canned - motor pump, and decrease electromagnetics effect of the liners in designing the permanent magnet canned - motor pump. the main parameters of the permanent canned motor pump have been calculated with the finited element method, the eddy - current of the liners also have been studied deep and systematically in this dissertation

    為提高永磁屏蔽電泵的效率，減少永磁屏蔽電泵設計中屏蔽套電磁影響問題，本文對永磁電泵電磁場進行了有限元分析，計算了主要參數，對屏蔽套的渦流問題進行了分析研究。
  6. The research on design of the centrifugal permanent - magnet direct - current generator

    離心式永磁直流發電機的設計研究
  7. A fault current limiter using permanent magnets has been designed and its performance simulated using a twodimensional time - stepping finite - element method incorporating a model of hysteresis for hard magnetic materials

    摘要按永久磁鐵設計製成的故障電流限制器，性能是靠含有硬磁材料的磁滯模型的2維時間分級有限元件方法獲得的。
  8. The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed

    本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。
  9. Permanent magnet synchronous motors ( pmsm ) have the advantage of not requiring any magnetizing current and easy to control. they are widely used in high performance servo systems

    永磁同步電動機轉子勵磁由永久磁鐵產生，因其電路結構簡單，控制方便，而廣泛應用於高性能的伺服系統中。
  10. Calculation of eddy current loss density distribution in permanent magnet of pmsm

    永磁同步電機轉子永磁體內渦流損耗密度的計算
  11. By successful solution of non - linear magnetic fields and revision of the program, we can reach following conclusions : in the computation of nonlinear magnetic fields, if iteration method is used, under - relaxation is necessary when amending the permeability distribution in soft magnetic materials ; and when < wp = 5 > calculating the equivalent current density in permanent magnets, under - relaxation is not a necessity ; when searching for permeability values by interpolation method on the demagnetization curve of soft magnetic materials, if a fixed saturation point is set, around this point an abrupt change of permeability values will be obtained ; this sudden change may cause a little problem in the smoothness of magnetic field distribution ; because the magnetic circuits of microwave tubes are too complicated, in the author ' s view, to describe the working state of a magnet system, the working points of magnets can not do it properly but average energy production of magnets will serve ; as to indicate the quality of a magnet system design for microwave tubes, the efficiency of magnetic energy utilization will be a very good criterion

    由此得出結論，在非線性磁場計算中：採用迭代法的情況下，在各迭代循環之間進行磁導率修正時，一個欠鬆弛迭代過程是必需的；對永磁體中的等效電流修正時可以不作欠鬆弛迭代；在純鐵的磁化曲線上指定某一個固定的磁感應強度為磁飽和值，會使得插值求出的磁導率在該磁飽和值附近有一突變，這一突變對計算結果中磁場分佈變化的光滑性稍有影響。在微波管磁系統設計中，由於微波管磁路比較復雜，作者認為磁體的工作點並不能很好地反映磁體的工作狀態，而採用平均磁能積為衡量磁體工作狀態的標準更加符合微波管磁系統的實際情況；要表示磁系統設計好壞的程度，則用磁能利用的效率為標準更好。
  12. Will they affect current permanent residents

    現有的永久居民會受到什麼影響？
  13. These direct current ( dc ) permanent - magnet wound field servomotors range from 3, 000 revolutions per minute ( rpm ) to less than 1 rpm without stalling

    這些直流永磁鐵將使補助馬達間接變速裝置從每分3000轉降低到每分1轉，並無延遲。
  14. Permanent residents who apply for australian citizenship before the legislation is changed will need to meet the current residence requirements

    在立法修訂前申請入籍的永久居民只需要滿足現有的局主要求。
  15. People who are permanent residents before the commencement of the new legislation will only need to meet the current residence requirements ( presence in australia as a permanent resident for periods amounting to two ( 2 ) years in the last five ( 5 ) years including one ( 1 ) year in the last two ( 2 ) immediately prior to making the application ) provided they applied within three ( 3 ) years from the day the legislation commences

    在新法案生效前，已成為澳洲永久居民的人士如果在新法案生效之日起三年內申請入籍，則僅需要滿足目前的居住要求即可（在申請前5年內必須在澳大利亞以永久居民的身份累計住滿2年以及在申請前2年內須在澳大利亞累計住滿1年） 。
  16. It makes finite element analysis for no - load motor, full - load motor and armature magnetic field singly acting motor, and it gets distributing map of magnetic field and static characteristics curve as different rotor angle and different armature current in a permanent magnet circle for the motor, it analyzes and explains influences of armature magnetic field on the inductance characteristics of windings

    分別對電機空載、負載以及電樞磁場單獨作用3種情況下進行了有限元分析，得出在1個永磁磁鏈周期內不同轉子位置角和不同電樞電流作用下的磁場分布圖以及靜態參數特性曲線。
  17. Analysis of armature current for rare earth permanent magnet synchronous machine

    稀土永磁同步電機的電樞電流分析
  18. The system uses the permanent magnet synchronous machine as the driver motor based on the idea of polygonal flux linkage locus and the permanent magnet brush - less motor is as the momentum balance motor by means of speed and current loop in order to track driver motor precisely and rapidly. the harmonious control of driver motor and balance motor is realized by making full use of the dsp hardware resource and complicated programmable logic device. the software design is composed of c and assembly language to realize motor control arithmetic of polygonal flux linkage locus

    衛星天線伺服控制系統以正弦波永磁同步電機作為驅動電機，採用多邊形磁鏈軌跡法（電壓空間矢量法）的控制策略；動量平衡電機採用永磁無刷直流電機，通過電流環、速度環達到快速、精確跟蹤驅動電機的目的，確保了衛星姿態恆定；設計方案中充分利用了dsp硬體資源和復雜邏輯陣列實現了驅動電機和平衡電機的協調控制，並通過c語言和匯編語言的混合編程實現了電機的多邊形磁鏈軌跡控制演算法。
  19. Part 2 is composed of five parts, they arc fujian rural households consumption under the influence of current income, fujian rural households consumption under the influence of past income, fujian rural households consumption under the influence of permanent income, consume highly sensitive and wealth effect

    文章的第二部分可分為五個組成部分，分別為：現期收入對福建農村居民消費的影響、過去收入對福建農村居民消費的影響、持久收入對福建農村居民消費的影響、福建農村居民消費的過度敏感性以及財富效應。
  20. Pointing to the measurement of pulse current ' s peak value and frequency generated in the discharge circuit the article gives an analysis on its principle, correspondingly, the article introduces how to measure the peak value of pulse magnetic field and magnetic suction of the permanent magnet

    對放電迴路產生的脈沖電流峰值以及其波形的檢測進行了原理上的分析，對永磁吸盤里永磁體中產生的脈沖磁場峰值的檢測以及永磁吸盤所產生的永磁吸力的檢測也作了相應的介紹。
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