轉矩波動系數 的英文怎麼說

中文拼音 [zhuǎnjǔbōdòngxìshǔ]
轉矩波動系數 英文
ripple torque coefficient
  • 轉 : 轉構詞成分。
  • 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
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 波動 : 1 （不穩定） undulate; fluctuate; unsettle; surge; rise and fall 2 [物理學] wave （motion）; wave...
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. 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。
  2. In light of market risk, there are sensitivity measurement method and volatility measurement method as well as the concepts about risk measurement, such as variance, duration, 3 - coefficient, 5 - coefficient and value at risk. and in light of credit risk, there are accounting - based ratio measurement method and volatility - based measurement method, as well as the related concepts, such as credit rating, z - score, transition matrix, expected default frequency

    其中，針對市場風險度量的方法包括靈敏度測量風險方法和波動性測量風險方法，與之相關的風險度量概念有方差、持續期、系數、類系數和在險價值；針對信用風險度量的方法包括基於財務比率的風險測量方法和基於波動性的風險測量方法，與之相關的風險度量概念有信用評級、 z分數、轉換矩陣、違約頻率。
  3. 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。
  4. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。
  5. Dissertation explains the theory and characteristices of switched reluctance motor based on its idealy linear math mode. analyseing and researching on control characteristic, control parameters, control strategy and their relationship, thesis designed hardware circuit and software of control system based on the strategy. dissertation discussed the transform function of system and illustrates it is essential to chang parameters in the pid control arithmetic, estimating parameters for the digital pid controller primarily, dissertation also researched on the exciting and protection of igbt

    論文以開關磁阻電動機的理想線性數學模型為理論基礎，對其原理特性進行了說明，對開關磁阻電動機的控制特性（轉速、轉矩） 、可控參數（導通角、關斷角、相電流、繞組端電壓）與控制策略（電流斬波、電壓斬波、角度位置控制等）及它們之間的關系進行了研究和分析。
  6. 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。
  7. 8. a pulsating torque minimization approach based on disturbance observer is proposed. the new disturbance observer is designed to observe the unknown torque disturbance caused by the torque ripple, the varying of the motor parameters, the changing of load torque and the not ideal performance of the inverter

    該系統將負載轉矩、轉矩紋波以及由電機參數的變化引起的轉矩干擾作為系統干擾，用干擾觀測器進行觀測，以此為基礎對轉矩脈動進行補償，實現對轉矩脈動的抑制。
  8. The software applies the technology of dynamic multiple documents. it includes password module, initialization module, waves of torque and rotate speed display module, data and report forms module and help module

    採用動態多文檔技術，整個系統包括以下幾個部分：密碼模塊、轉速和扭矩的初始化模塊、轉速和扭矩實時波形顯示模塊、數據與報表模塊以及幫助模塊等。
  9. This paper makes the feasibility design and study of the dtc ( direct torque control ) system based on analyzing some important parts, such as the arithmetic model of asynchronous motor in - coordinates, the choice of voltage vectors, and flux - linkages models, etc. the research work in this paper is described as follows : 1 analyzing of the dtc theory : material about the development and theory of dtc, the composing of dtc - system are presented in this paper

    本文在詳細分析了定子坐標系下的異步電動機數學模型、電壓空間矢量和磁鏈觀測器的基礎上，利用直接轉矩控制技術，構建了基於dsp的直接轉矩控制系統。論文的主要工作包括以下三個方面： 1直接轉矩理論分析研究：針對直接轉矩控制理論在低速范圍轉矩觀測器和轉速波動等問題，採取了滯環模式切換，矢量細分等改進措施。
  10. For an ev drive system, the variation of rotor time constant will bring on variation of torque and exorbitant line voltage even the field orientation may be destroyed. the varied torque will affect ev dynamic performance, and the higher voltage will limit the output power due to the bound of batteries in ev

    對于電動汽車驅動系統來說，轉子時間常數的波動會導致輸出轉矩和電機電壓的波動，並且嚴重時會導致系統出現振蕩，轉矩的波動會影響汽車的動態性能，電機電壓的波動則會由於電池電壓的限制而影響電機的輸出功率，這些都是電動汽車的驅動系統應該避免的問題。
  11. Based on the assumption of periodic rubbing force in rotor system, the rubbing forces onto each node of rotor system are estimated by modal expansion technique and the sub - harmonic decomposition of residual matrix between faulty and faulty - free vibration signals of rotor system through fft ( fast fourier transformation )

    基於轉子系統碰摩力的周期性假設，利用模態擴展方法，對故障和健康轉子系統振動信號的殘差矩陣進行傅立葉級數的分頻諧波近似，估算得到轉子軸承各節點的碰摩力。
分享友人
分享到 Line

分享到臉書