轉動勢 的英文怎麼說

中文拼音 [zhuǎndòngshì]
轉動勢 英文
rotation potential
  • 轉 : 轉構詞成分。
  • 勢 : 名詞1 （勢力） power; force; influence 2 （一切事物力量表現出來的趨向） momentum; tendency 3 （自...
  • 轉動 : 轉動turn; run; twirl; roll; revolve; rotate
  1. Collisonal quantum interference ( cqi ) was observed in the intramolecular rotational energy transfer in the experiment of the static cell, and the integral interference angles were measured. to observe more precise information, the experiment in the molecular beam should be taken, from which the differential interference angle can be obtained precisely. in this paper, the theoretical model of cqi is described in an atom - diatom system in the condition of the molecular beam, based on the first - born approximation of time dependent perturbation theory, taking into accounts the anisotropic lennard - jones interaction potentials. the method of observing and measuring correctly the differential interference angle is presented. the changing tendencies of the differential interference angle with the impact parameter, velocity, and et al. are discussed

    分子內部轉動傳能的靜態池實驗觀察到了碰撞量子干涉效應（ cqi ） ，並且測得積分干涉角，為了獲得更加精確的分子內部轉動傳能的碰撞量子干涉效應信息，實驗就必須要採用分子束實驗進行.本文理論上採用各項異性相互作用勢，應用含時微擾理論的一級波恩近似，假想在分子束實驗的條件下，建立在原子-雙原子分子體系中碰撞量子干涉的理論模型.理論上推導出微分干涉角具體表達式，通過計算定性地討論了微分干涉角隨著碰撞參數、速率等的變化趨勢，同時初步探討了實驗的正確觀測途徑，得出了採用分子束進行實驗觀測的實驗方法，為進一步進行分子束實驗提供了理論基礎，對實驗的進行起到了一定的借鑒作用
  2. Secondly, the effects of the crest width of the back - emf waveform to the torque ripple in the 120 ? conduction mode are analyzed, among which the effects of the advance commutation angle to the torque ripple are quantificationally analyzed for the bldcm drives whose back - emf waveform crest width is less than 120 ?,

    其次分析了120導通方式下反電動勢平頂寬度對轉矩脈動的影響，對于平頂寬度小於120電角的非理想梯形波反電動勢，定量分析了換相超前角對換相轉矩脈動的影響。
  3. 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。
  4. The simulation results prove that this control technique can effectively minimize the torque ripple for the bldcm drives whose back - emf waveform crest width is less than 120

    模擬結果表明這種控制策略能有效地抑制反電動勢平頂寬度小於120電角的無刷直流電動機的換相轉矩脈動。
  5. 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。
  6. 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

    闡述了抑制齒槽轉矩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矩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。
  7. Assuming an attitude, she began la ligue des rats : fable de la fontaine. she then declaimed the little piece with an attention to punctuation and emphasis, a flexibility of voice and an appropriateness of gesture, very unusual indeed at her age, and which proved she had been carefully trained

    她擺好姿勢，先報了題目： 「 la ligue des rats ， fable de la fontaine 」 ，隨后她朗誦了這首短詩，十分講究抑揚頓挫，聲調婉轉，動作得體，在她這個年紀，實在是很不尋常了，說明她受過悉心的訓練。
  8. 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。
  9. This paper comes to the following conclusions after analyzing the employment of exercise biomechanics in martial arts through dynamics, static mechanics, movement principle and turning mechanics : i. dynamics principles in martial arts are mainly deal with dynamic problems in martial arts, such as the procession of how a movement take place, the state of movement and the changing of postures and also the change of forcefulness, direction and effect of force in antagonist sports, as well as how to shift force and how to save force

    本文從動力學、靜力學、運動學、轉動力學原理四方面分析了運動生物力學原理在武術運動中的應用，得出以下結論： （ 1 ）動力學原理運用於武術運動中主要解決武術運動的動力方面問題。運動的發生、運動狀態、身體姿勢的改變；對抗性項目對抗時，力的大小、方向的變化及力作用的效果；如何借力；動作如何省力及騰空動作的踏跳與落地時的跌撲等，均可運用動力學中的力學原理針對性地進行分析研究。
  10. Scattering sections reflect some characters of interaction potential in collision systems ; therefore one can get information about interaction from the theoretical and experimental research of collision between atoms and molecules. it is especially noted that non - elastic scattering sections and single rotational - excitation sections give abundant information about orientation and repulsive potential of interaction between atom and molecules, which meant an important way as to fully investigating the interaction between atoms and molecules

    散射截面反映了碰撞體系相互作用勢的基本特性，從原子分子碰撞的理論及實驗中能夠獲得有關相互作用的信息；非彈性散射截面和單個轉動激發截面提供了有關原子與分子相互作用方向性和排斥勢的豐富信息，是全面探索原子與分子相互作用的重要途徑之一。
  11. The innovation in this paper is list below ( 1 ) use rectangle - shape pipeline so that the inducing electromotive force could be enhanced ; ( 2 ) use alternating current whose frequency is adjustable to induce the magnetic ; ( 3 ) make the flowmeter intelligent by use the microprocessor ; ( 4 ) finish designing the ls flowmeter with utra - low power consumption

    本文的創新之處在於採用矩形測量導管大大增加微流量條件下的感應電動勢；採用輸出頻率可調的正弦波電流作為勵磁電流達到消除50hz頻干擾和減少正交干擾的目的；利用單片機等高端現代電子產品實現了電磁流量計的高度智能化及設計出真正的超低功耗的、可用干電池長期供電的ls旋轉流量計。
  12. The interactions between atoms and molecules undertake a very important role in many physical processes and the investigation of rotation excitation cross sections of in the collisions of molecules with atons are an excellent method determining their interactions. many theoretical and experimental researcher have done a lot of reseach work hi this field and got plenty of theoretical and experimental data

    原子分子碰撞過程中轉動激發截面的研究是確定原子與分子間相互作用勢的理想方法，許多理論和實驗工作者在這方面做了大量的工作，並取得了很多理論和實驗數據。
  13. When the electrical functioning smoothly, the electrical inductance of the winding a reverse electromotive force will be formed, the higher the frequency, the greater the reverse emf

    當步進電機運轉時，電機各相繞組的電感將形成一個反向電動勢，頻率越高，反向電動勢越大。
  14. In this chapter, the method of bldcm rotor position detection is first discussed. then the principle and algorithm of bemf zero crossing point detection is explained. in succession, the chapter dissertates the software realization of the bemf zero crossing point detection algorithm, the software disturbance filter and the modification of phase displacement, and the software realization of commutation point

    在這一章中，先簡述了無刷直流電機的轉子位置器檢測方法；然後論述了反電動勢過零檢測原理和演算法以及該演算法的軟體實現、軟體濾波和相移修正、換相點的軟體實現；最後對軟體開環換相起動策略作了詳細論述。
  15. Emf role in reverse, with the electrical currents in the frequency or rate increases and reduced, leading to the decline in torque

    在反向電動勢的作用下，電機的相電流隨頻率或速度的增大而減小，從而導致轉矩的下降。
  16. This kind of connection has the combined advantage of shop welding and on - site high - strength bolting, which should have a better energy dissaption and plastic rotation capacity

    這種連接具有工廠焊接，工地高強螺栓拼接的綜合優勢，具有較好的耗能能力、塑性轉動能力等優點。
  17. The speed sensorless techniques for dtc system are very fascinating and challenging subjects recently, they are received wide attention in the literature. some brief description is provided. the proposed approaches are based on speed model of dtc, motor reference adaptive control, the instantaneous reactive power of motor and the extended kalman filter

    無速度傳感器調速系統是直接轉矩控制研究領域內一個非常熱門的研究方向，本文介紹了無速度傳感技術的發展歷史及目前的研究狀況，分別利用直接轉矩控制的轉速模型方法，模型參考自適應方法、電機定子反電動勢以及擴展的卡爾曼濾波器等方法設計了無速度傳感器系統，對于其數學模型和系統構成作了比較詳細的推導。
  18. Victims are helpless, at the mercy of the offender. by showing mercy to an offender, you put yourself back in control. take charge by forgiving

    受害者本身是弱者，但若能得饒人處且饒人，受害者也能奪回主動，反轉形勢。
  19. A nonlinear numerical model for wave transformation is established in time domain based on integral equation transformed from two dimensional laplace equation. then the model is applied to compute the linear wave and nonlinear wave deformation in offshore flow field. a new 0 - 1 combined bem ( boundary element method ) is adopted in this thesis to avoid computational errors accumulated with time steps

    本文以波動勢函數的laplace方程的green積分轉換得到的邊界積分方程為基本控制方程，建立了一種新的時域內波浪變形計算的數值模型，籍此對非線性波浪在結構物周圍的波浪形態進行了數值模擬，並通過數值造波水槽內的波浪試驗對數值模擬結果進行檢驗。
  20. This system is designed to measure motor ’ s three important parameters including stator coil inductance, stalling torque and back emf. all of these test results are used as basis for product detect

    設計這套測試系統用來檢測電機定子繞組電感、堵轉扭矩及反電動勢等三個重要電機參數，把其結果作為檢驗產品質量的依據。
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