磁動勢的 的英文怎麼說
中文拼音 [cídòngshìde]
磁動勢的
英文
magnetomotive-
A ti in an online mind - control forum recommends a web site called “ block emf ” ( as in electromagnetic frequencies ), which advertises a full line of clothing, including aluminum - lined boxer shorts described as a “ sheer, comfortable undergarment you can wear over your regular one to shield yourself from power lines and computer electric fields, and microwave, radar, and tv radiation. ” similarly, a tinfoil hat disguised as a regular baseball cap is “ smart and subtle
一位受害者在網上的一個大腦控制(精神控制)論壇上推薦了一個網站「阻止電動勢」 (電磁波頻率) ,建議一系列的衣服,包括鋁內襯短褲,如此介紹「的確,你可以穿著舒適的內衣,屏蔽普通電纜和計算機電場、微波、雷達、電視輻射」 ,同樣,一個內藏錫帽的普通棒球帽也是「高明的和精巧的」 。Ti in an online mind - control forum recommends a web site called “ block emf ” ( as in electromagnetic frequencies ), which advertises a full line of clothing, including aluminum - lined boxer shorts described as a “ sheer, comfortable undergarment you can wear over your regular one to shield yourself from power lines and computer electric fields, and microwave, radar, and tv radiation. ” similarly, a tinfoil hat disguised as a regular baseball cap is “ smart and subtle
一位受害者在網上的一個大腦控制(精神控制)論壇上推薦了一個網站「阻止電動勢」 (電磁波頻率) ,建議一系列的衣服,包括鋁內襯短褲,如此介紹「的確,你可以穿著舒適的內衣,屏蔽普通電纜和計算機電場、微波、雷達、電視輻射」 ,同樣,一個內藏錫帽的普通棒球帽也是「高明的和精巧的」 。The common principle is the use of the induction of an electromotive force by the variation of the magnetic flux through a coil.
一般原理均是使用通過線圈的磁通量變化感應的電動勢。In the second part, provided that the operating mode of the turbo generator keeps unchanged when the rotor winding appears fault, the magnetic motive force of the field winding will keep unvaried
通過對發電機磁動勢的分析,得出發電機在故障前後運行工況不發生變化的條件下,勵磁磁動勢將會維持不變的結論。Therefore, the magnetomotive force in the air gap is essentially proportional to the primary ampereturns squared.
所以,氣隙中的磁動勢實際上與初級安匝數的平方成正比。Through cell ammeter and armature magnetomotive force, we qualitativly analyze that harmonic magnetiv field has influence on motor operating performance, it can ensure whether slot coordination suits well or not
通過槽電流表和槽磁動勢圖定性地分析電機的諧波磁場對電機運行性能的影響,由此確定電機所選槽配合是否合適。The applications and developments of the rotor - ambs system in the engineering are showed in recent years. in particularly, we present the results for the studies of nonlinear dynamics in the rotor - ambs system. we also point out the trend of the rotor - ambs system in future and the necessity of the study on the nonlinear dynamics of the rotor - ambs system
本文的研究內容和所獲得的主要結果有以下幾個方面: ( 1 )綜述了磁懸浮研究的歷史,介紹了主動式電磁軸承-轉子系統在工程實際中的應用,主動式電磁軸承的研究現狀,總結了近十年來國內外對電磁軸承-轉子系統非線性動力學的研究進展和取得的成果,指出了電磁軸承發展的趨勢及進行非線性動力學研究的必要性。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。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三種控制方式下的轉矩脈動系數、轉矩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轉矩電流比的基礎上,更有效地抑制電磁轉矩脈動。Such windings make better use of iron and copper and also improve the mmf waveform and smooth out the torque developed by the machine
這種繞組可以更好地使用鐵和銅,並改善磁動勢的波形以及平滑電機所產生的力矩。As a consequence, the mmf due to the armature current is along the aixs midway between the two adjacent poles, called the quadrature ( or q ) aixs
因此,由電樞電流所產生的磁動勢沿著相臨的兩個磁極,並稱為正交軸。A commutator - brush combination is used as a mechanical rectifier to make the armature terminal voltage unidirectional and also to make the mmf wave due to the armature current fixed in space
通過使用換流器電刷的組合作為一個機械整流器以使得電樞的端電壓為單方向的同時也使得由電樞電流所產生的磁動勢在空間是固定的。It is a new - style method of the drive control fed by static transducer in the control of the microcomputer, which makes the stator flux movement discrete. and position and speed outputs can be achieved on the motor axes
它是在微機的控制下由靜止變頻器供電,使同步電動機定子磁動勢離散運動,在電動機軸上得到位置和速度輸出的一種新型傳動控制方式。Shorted rotor winding is a usual electric fault of synchronous machines. based on the analysis of fault mechanism especially the magnetic characteristics of tum - to - turn short circuit of rotor windings in turbo generator, the paper studies the diagnose method, which combines the traditional method with the intelligent method, to identify the fault and the severity
轉子繞組匝間短路是一種常見的發電機電氣故障,本文對其故障機理和磁動勢進行了分析,將傳統的方法和智能化方法相結合,對轉子繞組匝間短路的存在性和故障嚴重性進行了診斷。Three parts are included as follows : first of all, the basic circuit equation of radial pm generator for autos is given. the effect of reciprocity of pm and winding ' s magnetic force upon winding ' s inductance and current upon magnetic circuit saturation are analysed. according to these, we can obtain optimized design
首先,從本課題採用的徑向式結構的三相永磁同步發電機的物理模型出發,得出其基本電路方程式,並分析了永磁磁動勢與繞組磁動勢間相對位置的不同而對繞組電感不同的影響,相電流對磁路飽和效應的影響,為車用永磁發電機的優化設計提供了理論依據。The non - ideal bemf waveform of bldcm is often caused by two facts. one is that the platform width of bemf waveform is less than 120 ; the other is the cogging harmonics existed in the bemf waveform
非理想反電動勢波形的無刷直流電機有兩種情況,一種是反電動勢的梯形波的平頂寬度小於120 ;一種是由於磁場分佈受齒槽的影響,反電動勢存在齒諧波,使其波形發生畸變。The ideal bemf waveform of bldcm is trapezoid with 120 ! platform width. in the 120 conduction mode, the stator current is not ideal due to the stator inductance, and the torque ripple occurs
理想的永磁無刷直流電動機的反電動勢的波形是120平頂的梯形波,在三相六狀態120導通方式控制下,電流由於電機定子電感的存在而不是理想方波,因此產生了換相轉矩脈動。At first, the dissertation analyses the principles, the operation theory and the control techniques of bldcm ( brushless dc motor ). then according to the different bemf of different bldc motor, the dissertation analyses the torque ripple in the bldcm with ideal 120 擄 trapezoidal waveform bemf and non - ideal bemf waveform respectively. further more the dissertation presents different novel control techniques of the torque ripple minimization in bldcm
首先,對永磁無刷直流電機的定義,工作原理,控制方法進行了分析,然後根據永磁無刷直流電機的反電動勢波形的不同,對理想方波型無刷直流電動機的換相轉矩脈動,非理想方波反電動勢的無刷直流電動機的換相轉矩脈動進行了詳細的分析,並分別提出了不同的控制策略,對其換相轉矩脈動進行抑制。To implement this method, the structures of both the hardware and the software are analyzed in detail. the simulation and the experimental results show that this control technique can effectively minimize the torque ripple caused by distortion of the back - emf
闡述了實現這種方法的軟、硬體結構,模擬研究和實驗結果表明這種控制策略可以有效地抑制由於反電動勢的偏差所產生的電磁轉矩脈動。Railway fixed equipment and rolling stock. electromagnetic disturbances. measurement of longitudinal induced electromotive force
鐵路固定設備和車輛.電磁干擾.縱向感應電動勢的測量分享友人