磁轉矩 的英文怎麼說

中文拼音 [zhuǎn]
磁轉矩 英文
magnetic torque
  • : 名詞1. [物理學] (磁性; 能吸引鐵、鎳等的性質) magnetism 2. (瓷) porcelain; china
  • : 轉構詞成分。
  • : 名詞1. (畫直角或正方形、矩形用的曲尺) carpenter's square; square2. (法度; 規則) rules; regulations 3. [物理學] moment
  1. 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子位置的估計等。
  2. Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles

    對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的脈動系數、電流比等方面進行了全面的分析與比較,模擬研究和實驗結果表明,當反電動勢的平頂寬度小於107電角時,採用自同步svpwm控制方法可以在不損失電流比的基礎上,更有效地抑制電磁轉矩脈動。
  3. For the bldcm which has a general crest width of the back - emf waveform, two kinds of torque ripple conditions when drived by sine - wave current as well as by square - wave current are deduced based on the mathematical models. in addition, a comparison is carried out between these two conditions, which indicates that sinusoidal current driving is more favorable to minimizing the torque ripple when the crest width of the back - emf waveform is less than a certain value

    闡述了抑制齒槽措施對反電動勢波形的影響,利用無刷直流電機的數學模型推導並比較了任意平頂寬度梯形波反電動勢在正弦波和形波兩種電流驅動下的電磁轉矩脈動情況,得出在梯形波平頂寬度減小到一定數值后採用正弦電流驅動更有利於減小電磁轉矩脈動。
  4. 3. with fourier decomposition, the main component of pulsating torque, torque ripple is studied. it can be determined that torque ripple is caused by harmonic order 6n under the usual common conditions

    3 、對造成脈動的主要成分紋波進行諧波分析,得出在一般假設情況下,無刷直流電動機系統的紋波由電磁轉矩的6n次諧波造成的結論。
  5. Broken rotor bars fault diagnosis of induction machines based on wavelet transformation of electromagnetic torque

    基於電磁轉矩小波變換的感應電機子斷條故障診斷
  6. A novel bearingless motor with decoupling relationship between magnetic levitation force and electromagnetic torque is proposed and a prototype machine are designed and built

    分析了懸浮力產生的特點及電磁轉矩懸浮力的解耦控制機理。
  7. Simulation results of the method for a three - level inverter feeding induction motor are presented

    根據不同的運行速度,選用不同的電壓空間矢量進行線性組合,控制電機的定子鏈和電磁轉矩
  8. The two key parameters, back electromotive force ( emf ) and reactance of d q axial armature reaction are investigated, too. in the process of asynchronous starting, mathematics model of repmsm is established with 1, 2, 0 complex number coordinate system. combined with the model, electromagnetic torque is studied

    論文還研究稀土永同步電動機的異步起動過程,建立了稀土永同步電動機起動時的數學模型,並對電磁轉矩的性質進行了研究,論文還提出了起動時電磁轉矩的計算方法,論文對稀土永同步電動機的牽入同步過程進行了原理性分析,論文也對電機參數對于電機起動性能影響進行了研究。
  9. The results of the experiment show this creative ac variable frequency speed - governing experiment system can realize the load relationship of direct electromagnetic torque between the motor group, get the continuous control process easily for the reaction load and potential energy load during four quadrant, achieve the total availability of the regenerate energy at any kind of load, and the system consumed power make up under 30 % of actual load power at any kind of load

    該方案研究獲得的實驗結果表明:這種具有創新特色的交流變頻調速實驗系統可實現電動機組之間直接電磁轉矩方式的負載關系,可方便地獲得電動機在反應或位能負載特性下四象限運行的連續控制過程,並實現了任意負載方式下再生能量的全部回饋利用,任意負載下系統消耗功率僅占電動機實際負載功率的30 %以下。
  10. Comparing the real electromagnetism torque and the ideal electromagnetism torque, we can find the trend of the speed variation, and then we can control the motor properly

    實際電磁轉矩與理想電磁轉矩相比較,即可得到電機速的變化趨勢。
  11. At the same time, it detailed demonstrate and carry out the way, which apply housing electric spindles at generation state to carry out housing toque loading in the joint testing and indirectly estimation housing torque loading by the electromagnetism torque of inner tube electric spindles. thus, the technical problem that the high speed shafting torque loading device and torque sender are difficult to ins tall is solved. and it saves a set of expensive high speed shafting torque loading and measuring device

    同時,詳細論證並實施了採用外套電主軸工作在發電狀態實現接合試驗的外套扭加載和通過內套電主軸的電磁轉矩來間接估算外套加載扭的方法,從而解決了高速軸系扭加載裝置和扭傳感器不宜安裝的技術難題,並且節省了一套昂貴的高速軸系扭加載和檢測裝置,該成果填補了國內高速單向軸承試驗臺扭加載領域的空白,達到了國內領先水平。
  12. 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脈動。
  13. For the bldcm which has a neither sinusoidal nor trapezoidal back - emf, that is, for a general shape back - emf bldcm, this dissertation proposes a novel id = 0 vector control method. by this method, the iq for a constant torque to produce is calculated through coordinate transformation, and the reference iq is tracked by vector control in the dq0 frame

    對于實際反電動勢波形既非正弦又非梯形波的無刷直流電動機,提出一種新型的任意波形反電動勢無刷直流電動機的i _ d = 0矢量控制方法,通過坐標變換浙江大學博士學位佑文摘要求解產生恆定電磁轉矩所需的q軸電流,並在dqo坐標系下通過矢量控制對q軸參考電流進行跟蹤。
  14. This paper discussed two - pole permanent magnetic spherical motor, in which two poles of rotor are permanent magnets. the electro - magnetic relationship is analyzed and the electro - magnetic model has been developed, which includes voltage equations, flux linkage equations, and electro - magnetic torque expressions

    本文研究了雙極永型球形電動機的電關系,將不對稱繞組折算為對稱繞組,建立了電機的電模型:電壓方程式、鏈方程式和電磁轉矩方程式。
  15. 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子電流定向的方法,並控制外加子電壓與子電流始終反相,以保持了子電流與鏈矢量垂直,通過控制子電流的大小來達到控制電機電磁轉矩的要求。
  16. Calculation of electromagnetic torque for rare earth permanent magnet synchronous motor by using fem

    用有限元法求解稀土永同步電機電磁轉矩
  17. Finally, a novel scheme of bearingless switched reluctance motors with two - phase excitation is proposed. a mathematical model is built based on two - phase excitation

    建立了雙相導通模式的數學模型,推導了徑向懸浮力和電磁轉矩的表達式。
  18. These are the main results : firstly, on point of the energy exchange in mechanic - electronics, relations among magnetic energy, torque and radial force of pmb are found out

    主要研究工作如下:首先,從機電能量換的角度出發,推出了動力軸承場能量與電磁轉矩及徑向懸浮力的關系。
  19. Secondly, the adopted motor control method - - direct torque control is introduced. then, the initial flux linkage establishing and the electromagnetic torque ripples are analyzed

    然後,介紹了本文所採用的電機控制方法? ?直接控制,並分析了傳統直接的初始鏈建立問題和電磁轉矩脈動問題。
  20. Researching results show that the effect of reducing the electromagnetic torque ripples and the overcurrent striking when starting is obvious. so the methods can be the basis for the further research

    研究結果表明,所作研究在減小電磁轉矩脈動和建立鏈時的電流沖擊效果是明顯的,為異步電機起動發電的進一步研究工作打下了基礎。
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