瞬時轉矩 的英文怎麼說
中文拼音 [shùnshízhuǎnjǔ]
瞬時轉矩
英文
instantaneous torque-
The equations of motion governing the axisymmetric elastic deformation of finite orthotropic cylindrical shells, involving the effect of transverse shear and rotational inertia, are derived. by applying the reverberation method, the displacement and the resultant forces of the shell in the phase space are expressed. then the transient waves in the finite orthotropic cylindrical shell subjected to the axisymmetric impact are obtained by using inverse laplace transforms. furthermore, the transient solutions are decomposed to the generalized ray integrals and computed numerically
分析了計及剪切變形和轉動慣性的有限長正交異性圓柱殼中彈性瞬態波的傳播問題，採用回傳矩陣法，在相空間中給出了位移和內力的表達式。再利用laplace逆變換，得到正交異性圓柱殼受軸對稱沖擊作用時彈性瞬態波解，然後將其分解為若干廣義射線積分之和，並用數值方法求解之。Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively
本文對大圓環直線感應電機進行了深入細致研究，內容包括： （ 1 ）本文採用有限長行波面電流作用於有限長鐵芯上的模型，引用了氣隙磁場一維解，研究了單層繞組磁場，奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較，簡單介紹了二維解； （ 2 ）用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析，並分析了結果； （ 3 ）用軟體進行了額定電壓下的瞬態分析，得到了轉矩，位移，轉速隨時間變化曲線圖，利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較，採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證，由實驗測得了三相電流波形，並與計算結果進行了比較，對其不對稱性進行了定性分析。This method can rapidly extract speed law from starting current of dc motor with fairly good precision, and thus the torque - speed characteristic can be acquired
並通過提取直流電機起動過程電流信號的瞬時頻率有效地研製了一套無轉矩轉速傳感器直流電機的快速測試系統。Taking dc motor test as an example, a creative idea of applications of some advanced signal processing tools, such as time - frequency analysis, wavelet, and instantaneous frequency ( if ) evaluation, in motor testing field is presented. the paper systematically summarizes basic theories of time - frequency analysis and wavelet transform based on which an in - depth research of effective if evaluation based on wavelet ridge and wavelet curve is carried out. in the end a fast t - n characteristic testing system with neither torque nor speed sensor is successfully developed
本論文主要關注小波分析在電機性能自動測試系統中的應用，針對傳統電機測試系統以及信號處理技術在電機測試領域中應用的不足，以直流電機為例，提出了將時頻分析、小波包變換以及基於小波脊的瞬時頻率提取方法應用到電機測試領域的新思路；較系統地總結了時頻分析和小波變換的基本理論，深入探討了基於小波脊線和小波曲線的瞬時頻率提取，並成功開發了基於正交小波包分析和基於小波脊線的瞬時頻率提取的無轉矩轉速傳感器的直流電機快速測試系統。It is showed that the torque ripple is not only connected with the phase currents, but also with the other factors, such as the instantaneous phase emf ' s in the case of commutation, the angle of commutation and the parameters of the windings
從一個新的角度分析了繞組換相引起轉矩波動的原因，指出換相轉矩波動不僅與電機繞組電流有關，還與換相時相繞組感生電勢瞬時值、換相位置角、繞組參數等因素有關。In chapter 3 the torque ripple minimization algorithm based on torque observation and instant torque control is studied as well as the fuzzy pid controller does
在分析兩種轉矩脈動抑制方法局限性基礎上，研究了基於轉矩觀測的瞬時轉矩脈動抑制演算法以及轉速環的模糊pid控制器設計。This thesis is about the torque ripple minimization of switched reluctance motors ( srm ) under the base speed. based on the instant torque control strategy, aiming to minimize the torque ripple of srm during commuting and to obtain excellent dynamic and steady state performances
本文主要研究開關磁阻電動機（簡稱sr電機）在基速范圍以下轉矩脈動的抑制問題，研究時以瞬時轉矩控制為基礎，旨在減小換相期間sr電機的轉矩脈動。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。In chapter 3, the non - linear equation was linearized with the jacobi matrix, and then the linearized equation was transformed into fixed frame to analyze the stability problem with eigenvalue method ( on - ground or hovering ) or floquet theory ( forward flight ). meanwhile, the equation was perturbed by sweep frequency excitation from steady state to get transit decay of lag response which was then transformed into fixed frame with a numerical fourier coordination transformation ( fct ). the fixed frame response along with the body response was analyzed via an fft to determine modal frequencies
然後，在穩態響應的基礎上利用雅各比矩陣對非線性方程進行了線化，線化后的方程利用多槳葉坐標變換轉換到固定系下后，利用直接特徵值分析（地面、懸停）或floquet理論（前飛）對系統進行了穩定性分析;同時，對系統進行了瞬態響應分析;在系統達到穩態的基礎上進行掃頻激勵，用fft變換求得系統頻率，進而用移動矩形窗方法分析得到系統的阻尼。On the basis of the principle of direct torque control, a control strategy of the grade of errors for induction motor has been proposed to improve the performance of powertrain system of hybrid vehicle in this thesis. the stator flux error, electric magnetic torque error and flux position angle are considered as control variables, and the switching states are determined by the control rules of the direct torque control
本文在直接轉矩控制系統的基礎上提出了一種基於誤差等級的直接轉矩控制dtc策略，它以電機定子磁鏈誤差、電機電磁轉矩誤差及磁鏈位置角作為控制變量，然後根據直接轉矩控制原理制定控制規則來選擇開關狀態，進而提高系統瞬態時的轉矩響應。Instantaneous torque control of switched reluctance motors based on rbf neural network
神經網路的開關磁阻電機瞬時轉矩控制4 、 on the basis of analyse of a quasi - static meshing simulation in a meshing period, a dynamic meshing simulation in the case of definite torque and rotary speed are carried out in a meshing period. the numerical results which indicating the variety of the contact status, the contact stress, the bending stress in the location of teeth root and the torque and rotary speed of gear pair vs the different meshing position are presented
4 、在對螺旋錐齒輪準靜態嚙合進行模擬分析的基礎上，進行了螺旋錐齒輪動態瞬態嚙合模擬分析，重點分析帶載啟動時出現的沖擊現象，得出了齒輪的接觸狀態、接觸應力、齒根彎曲應力及主從動齒輪的扭矩、轉速和加速度隨嚙合位置變化的規律。This method simplified the complexity of linear separating algorithms. this thesis construct an characteristic - like function and find a special matrix, transforming bss into eigenvalue decomposing problems to solve a class problem of linear mixture
本文構造了一個類特徵函數，找尋了一個特殊矩陣，將bss問題轉化為此矩陣的特徵值分解問題，解決了一類線性瞬時混合盲分離問題。If the average or instantaneous torque, rotate - speed and power can be got exactly, expediently and reliably, it will be useful for improving the performance of the engine
若能準確、可靠、方便地測出受試機械的平均或瞬時的轉矩、轉速和功率，這對改進和提高旋轉動力機械的性能大有裨益。分享友人