有效磁矩 的英文怎麼說

中文拼音 [yǒuxiàocíjǔ]
有效磁矩 英文
moment effective magnetic
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 磁 : 名詞1. [物理學] （磁性; 能吸引鐵、鎳等的性質） magnetism 2. （瓷） porcelain; china
  • 矩 : 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
  • 有效 : effective; valid; efficacious
  1. Being a sort of new principle micromotor in the fronitier of science. the ultrosonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor. compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism

    超聲波電機（ ultrasonicmotor ）是近二十年來發展起來的一種新原理電機，其原理不同於傳統的電磁型電機，它是利用壓電陶瓷的逆壓電效應使定子的表面質點產生橢圓運動，通過定子和轉子之間的摩擦力驅動轉子運動。這種新型的電機與傳統電磁電機相比，具有響應快、不受電磁干擾、結構緊湊、低速、大扭矩、斷電自鎖等優點，因而在微型機械、機器人、精密儀器、家用電器、航天器、汽車等方面顯示出廣泛的應用前景。
  2. The exterior and the install sizes all in the light of iso international criterion to design and make, the whole structure adopt after pull pattern of electrical engine direct link my companys patent, by centernog prop up, the structure is tightly, teardown and maintenance is convenient the bound of capability is broad the alnico of passing wrestdistance uses of advanced thulium material permanent magnet nd fe boron to make inside and outside magnet ; uses of the most streampadd nonmetallic material pad f46 inside to be made - up isolationsheath assembled and its provided with high strength dynam capability

    ，整體結構採用電機直聯的后拉式我公司專利，由中間支架支撐，結構緊湊，拆卸維護方便，性能范圍寬傳遞扭矩的磁鋼選用先進的稀土材料永磁體「釹鐵硼」製造內外磁體，使用最新型非金屬材料內襯f46製成的隔離套組合具有高強度的力學性能，徹底消除了一般磁力泵具有的磁渦流損耗，提高了整機的效率。
  3. This paper presents our research in actuating in - vivo micro - robot based on the capsule endoscope platform by the external power. while seeking secure driving method we take several factors into account, such as driving environment, power transmitting and consuming, motion requirement and controllability, and locating technique. we mainly deal with driving the capsule with spatial gradient magnetic field, so we employ combined electro - magnetic coils, including gradient coils and homogenous coils, which have rotational dof around a translatable patient bed, to compose a controllable uniform gradient which act on the permanent - magnet embedded robot, thereby get an appropriate spatial force and torque to fulfill the anticipant locomotion such as move, stop, pitch and yaw

    基於驅動環境、能量供給和消耗、驅動動作要求及驅動安全性與可控性，定位方案等多方面考慮，尋求安全可靠的腸胃檢查微機器人的外部驅動控制方法，並著重研究直接利用外磁場磁力驅動微機器人:在微機器人內部嵌入永磁性體，利用體外的組合電磁線圈產生加載電流控制的驅動磁場，其中外部的電磁線圈由多組梯度線圈和勻場線圈組合構成，通過繞病床的旋轉以及病床的平移共同控制微機器人所在位置的磁場強度及梯度，作用於微機器人內嵌磁體以獲得空間意義上的必要驅動力和調整轉矩，從而有效地完成驅動動作要求。
  4. The dissertation has been divided into three part : the method of scalar fem for calculating the scattering and coupling character of 2d cavities ; the high efficient algorithm of vector fem for the scattering and coupling character of 3d cavities ; the method of calculate caliber admittance matrix for high efficient algorithm to compute the scattering and coupling character body with open cavities

    全文分別研究標量有限元邊界積分求解二維腔體電磁散射與耦合的計算方法，矢量有限元邊界積分求解三維腔體電磁散射與耦合的計算方法，同時針對含腔目標的高效求解問題提出了口徑導納矩陣的新的計算方法，提高了計算效率。
  5. Abstract : according to the continuative condition of the tangential fields on the slot aperture which is the inclined narrow - slot on the broadwall of a sectoral waveguide, the moment method is used to calculate the magnetic current coefficient and distribution. then the scattering field, the scattering parameter and the equivalent impedance are obtained. leting only the te11 dominant mode propagates in the waveguide, the scattering parameters and the normalized equivalent series impedance in the x - band are computed. the basis disigned the slot antenna and the slot array is offered

    文摘:根據縫隙口面切向場的連續條件，採用解析數值法矩量法，對扇面波導寬壁上窄的斜縫進行了計算，解得了磁流系數及其分佈，並得到散射場、等效散射參量及等效阻抗等重要參數.假定波導中僅有te11主模傳輸，在x波段計算了散射參量和歸一化等效串聯阻抗，給出計算結果，為縫隙天線和縫隙陣列設計提供了依據
  6. Based on the special property of magnetic fluid ( mf ), we fill the magnetic fluid into the working clearances of the servo valve torque motor. one side, the magnetized magnetic fluid can exert a damping torque on the torque motor armature and reduce vibration of the armature ; on the other side, it can improve the magnetic circuit efficiency of the torque motor because of the magnetic fluid ’ s larger magnetic permeability

    基於磁流體所具有的特殊性質，將磁流體添加到伺服閥力矩馬達的工作間隙中，一方面磁流體被磁化后可增大銜鐵的阻尼力，減少振動;另一方面由於力矩馬達氣隙中磁導率的提高，使氣隙中的磁通量增大，力矩馬達的磁路效率和輸出扭矩將增大，因此可以提高力矩馬達的固有頻率和伺服閥的響應速度。
  7. By using the larger magnetic permeability, magnetic fluid was used to improve the magnetic circuit efficiency in torque motor, enlarge the output torque and displacement of torque motor, and the output flow of servo valve. correspondingly, the ability of noise - overcoming and system damping was enhanced due to the property of magnetic fluid. as a result, the stability of servo valve and servo - control system can be improved

    由於磁流體具有較大的導磁率，可提高力矩馬達磁路效率、增大力矩馬達的輸出力矩和位移，從而增加伺服閥的輸出流量;同時，利用磁流體的粘度特性，可增強力矩馬達阻尼及抗干擾能力，從而增強伺服閥及伺服控制系統的穩定性。
  8. 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。
  9. Flux position & error in flux magnitude and error in torque are used as fuzzy state variables. fuzzy logic is used for choosing the switching state. a fuzzy logic controller can choose the switching states according to a set of fuzzy rules based on both specialists " experience and knowledge, which improves the response performance of the system effectively during start - up and change in load

    作為本文的一個創新點，針對普通的直接轉矩控制在給定轉矩躍變時反應較慢的缺點，提出了一種模糊控制器，把磁鏈位置、磁鏈誤差和轉矩誤差作為模糊輸入變量，應用模糊邏輯來確定逆變器的開關狀態，該模糊控制器根據一套基於專家經驗和知識的模糊規則來選擇開關狀態，從而有效地提高了系統在啟動和負載突變時的響應速度。
  10. In 6. 635, topics covered include : special relativity, electrodynamics of moving media, waves in dispersive media, microstrip integrated circuits, quantum optics, remote sensing, radiative transfer theory, scattering by rough surfaces, effective permittivities, random media, green ' s functions for planarly layered media, integral equations in electromagnetics, method of moments, time domain method of moments, em waves in periodic structures : photonic crystals and negative refraction

    本課程所覆蓋的論題包括：狹義相對論、運動媒質的電動力學、色散媒質中的波、微帶集成電路、量子光學、遙感、輻射傳輸理論、粗糙表面上的散射、有效介電系數、隨機媒質、平面層狀媒質的格林函數、電磁學中的積分方程、矩量法、時域矩量法、周期結構中的電磁波：光子晶體和負折射率。
  11. There exists magnetoelectric effects in two type of material, one of them is spin - order material called magnetoelectrics that may exhibits an induced linear magnetoelectric effect by external field. this effect is named as the electrically induced magnetoelectric effect ( me ) e or magnetically induced magnetoelectric effect ( me ) h a ferroelectromagnet, however, differs from the magnetoelectrics in that it shows spontaneous magnetoelectric effects in addition to the ( me ) e, h effects induced by external fields

    磁電效應主要存在於兩類物質中，一類是自旋-軌道有序的物質所表現出的外場（磁場或電場）誘導的線性磁電效應（ me ） _ （ h ， e ） ，又被稱為磁場感生的電矩效應或電場感生的磁矩效應。
  12. In order to minimize the torque ripple of srd, the dissertation further design the intelligent torque control system, introduce the instantaneous torque control strategy based on torque distribute function, which is implemented by the flux linkage controller of srm. furthermore, considering the multi control parameter, the article also found the rotor position angle controller based fuzzy logic so as to optimize the whole control system and effectively reduce the torque ripple

    為了降低srd系統的轉矩脈動，本文在所建模型的基礎上，設計出智能化轉矩控制系統，利用轉矩分配函數，提出瞬時轉矩控制策略，同時採用磁鏈控制器來實現；考慮到srd具有可控參數多的特點，本文同時建立了優化轉子位置角的模糊控制器來達到智能化轉矩控制的目的，從而有效抑制sr電機的轉矩脈動。
  13. In this dissertation, the radiation problems of wire antenna mounted on the arbitrary shaped conducting platform and the scattering problems of arbitrary shaped conducting objects are analyzed using impedance matrix interpolation with the moment method

    本文應用矩量法結合阻抗矩陣插值技術，快速有效地求解實際工程問題中常見的任意形狀金屬目標的電磁散射問題及金屬載體上線天線的電磁輻射問題。
  14. Compared with normal synchronous motors, the permanent magnet synchronous motor ( pmsm ) is effective, high pull - in torque, fast speed response and well speed precision in open loop

    永磁同步電動機（ permanentmagnetsynchronousmotor ，以下簡寫pmsm ） ，與普通交流電機相比，具有效率高，功率密度高、啟動轉矩大、響應速度快、開環轉速精度高、等諸多優點。
  15. First, a pmsm direct torque control method based on svpwm is studied. and a good control effect of the flux and the torque is gained according to selecting the six voltage space vectors. and in simulation, this control method consider the circs that the angle between the stator and the rotor is bigger than 90 degrees, which restrains steps losing of synchronous motor effectively

    首先研究了基於svpwm （空間矢量pwm ）的永磁同步電動機直接轉矩控制方法，通過對六步電壓空間矢量的綜合控制，可以得到比較滿意的磁鏈和轉矩控制效果，而且模擬中充分考慮了定轉子夾角大於90度的情況，有效地限制了同步機的失步問題。
  16. The fft of helmholtz equation on the regular domain is studied. and the multifrontal algorithm is used to solve the matrix equations in computational electromagnetics. finally, the finite - difference approximate forms of maxwell equations and the despres transmission condition are discussed

    為了充分提高演算法的計算效率，研究了規則區域上helmholtz方程的fft快速演算法，以及有效地將多波前演算法引入計算電磁學領域用於求解差分稀疏矩陣方程。
  17. In the computation procedure of the above problems, efficient algorithms to perform sparse matrix were applied to saving computer memory units and cpu time. the conjugate gradient method and biconjugate gradient method were applied to solve the sparse systems of generated linear equations

    為了減少計算機內存的需求和有效提高計算速度，本文在分析計算各類目標的電磁散射和輻射問題時，採用稀疏矩陣的存儲和壓縮技術，並運用共扼梯度和雙共轆梯度等方法求解線性方程組。
  18. 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。
  19. To verity the theory is right and practical, this paper achieves the simulating test which including stator flux linkage mars models and speed estimate based on mras dtc system, and analyses the result of the test

    為了驗證包含本文提出的磁鏈估算模型和速度辨識模型直接轉矩控制系統的可行性和有效性，本文利用matlab / simulink完成模擬試驗並對模擬的結果進行了理論分析。
  20. 3. based on the comprehensively deep research on the pmsm ' s mathematics model, a newly equivalent sliding mode current controller is presented used by field - oriented control, which improves the stator - current waveform of pmsm, decreases the torque ripple. the conclusion above is verified by the simulation results

    3 、在對永磁同步電動機（ pmsm ）的數學模型進行分析的基礎上，利用矢量控制原理，設計了一種新型等效滑模電流控制器，以改善pmsm的相電流波形，減少轉矩脈動，模擬結果驗證了該方法的有效性。
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