transient equation 中文意思是什麼
transient equation
解釋
非穩定方程-
The paper proceeds from the transient equation for voltage and torque, analyze the electromechanic time constant of permanent - magnet dc servomotors based on the theory, and compare with the several testing methods which are used normal in the engineering, point out the difference and applying area also for the testing error which is led to possibly
摘要為了準確評價伺服電動機的動態性能指標，從電機的電壓、轉矩平衡方程式出發，在理論上對永磁直流伺服電動機的時間常數進行了分析探討，並對工程實際中常用的幾種測試方法進行分析和比較，指出其差別和適用范圍以及可能造成的測試誤差。 -
By use of - perturbation method with spatial discretization, the hydraulic transient system controlled by quasilinear partial differential equation was converted to a time - continuous linear system, so that the inverse problem of hydraulic transients under limited pressure could be sol ed with the optimal control theory for time - continuous systems
採用-攝動法並經過空間離散，將由擬線性偏微分方程式控制制的有壓瞬變流系統轉化為時間連續線性系統，從而使有壓瞬變流限壓控制反問題能應用時間連續系統最優控制理論來求解。 -
The differential equation of pump station start - up transient is established and derived from discharge balance and moment equation of pump unit
摘要本文從水量平衡及水泵機組力矩方程出發，建立起水泵從起動到同步的微分方程式。 -
The formulation for the flow model is given using the finite element / control volume ( fe / cv ) technique based on darcy ' s law of creeping flow through a porous media. the heat transfer model is based on the two - dimensional, transient heat conduction equation, including heat generation. the cure kinetics model is based on kamal ' s model, and the degree of the resin cure as a function of temperature and time
樹脂流動階段的模擬是根據牛頓流體在多孔介質中的滲流理論，應用darcy定律並使用有限元/控制體技術建立起來的；熱傳遞模型是一個二維瞬態熱傳導方程，考慮樹脂反應放熱；樹脂的固化模型利用了kamal提出的固化動力學方程，將固化度取為時間和溫度的函數。 -
In the turbulent flow, the fluid ’ s physical parameters has the stochastic change along with the time and the space, it is very difficult to carries on its rate process ’ s precise computation and the simulation with mathematics method, but unstable condition navier - stokes equation regarding open canal current of water transient motion suitable
閘后水流經過加糙的海漫段時，其水流狀態屬明渠紊流。流體中的各種物理參數，都隨時間與空間發生隨機的變化，很難用數學的方法對其運動過程進行精確計算和模擬。 -
Three mathematical models are presented to express the characteristics based on the systematical analysis of mechanical, hydraulic and fluid dynamic characteristics during three transient process, and numerical calculation methods are carried out to the three mathematical models. with the rigid water hummer theory and hydraulic characteristics, this paper has improved the boundary condition equation at pump during the suspending period, and drew a simplified mathematical model
針對大型低揚程泵站過渡過程的具體特點，利用剛性水錘理論，對事故停泵時泵處的邊界條件方程進行改進，並結合泵裝置水力特性，得出大型低揚程泵站停泵過渡過程簡易計算方法的數學模型；針對具體數學模型編製程序進行計算求解。 -
In order to resolve the question, in the thesis a simulation arithmetic of hydro - electrical system is put up. the equations of hydro - electrical system are divided to two parts, one of which consists of the differential equations of conduit system, hydro turbine and generator ' s rotator and is solved by characteristic equation arithmetic, the other of which consists of the differential equations of generator, magnetic system and grid and is solved by longge - kuta arithmetic or covert integrated arithmetic. through the alternative solving of the two parts, the simulation results of the large - disturbance transient could be abstained eventually
為解決這一問題，本文提出了一種將水力系統和電力系統方程交替求解的水電系統聯合模擬演算法，即將包括輸水系統、水輪機以及機組轉子等部分的水力系統差分方程作為一部分，將包括同步發電機、勵磁系統以及電網等部分的電力系統微分方程或差分方程作為另一鄭州大學工學碩士論文部分，對前一部分採用特徵線法求解，對后一部分根據模型形式採用龍格一庫塔法或隱式積分法等演算法求解，這兩部分的求解過程交替進行，最終即可得到水電系統大擾動過程的模擬結果。 -
( 2 ) the equation satisfies the transient distribution of the waiting time w ( t ) is obtained, to which the minimal nonnegative solution is the unique bounded solution
（ 2 ）給出等待時間w （ t ）的瞬時分佈所滿足方程，並證明它為該方程的最小非負解，也是唯一有界解。 -
In this dissertation, we first state briefly the developmental history, the present condition of queueing theory, the markovization of queueing system and the research situation for several types of ergodicity, and induce the preliminary knowledge of markov processes and markov skeleton processes, and then the dissertation discusses mainly focus on several problems which exist in researching gi / g / l queueing system, which are categoried as follows : ( i ) non - equilibrium theory for gi / g / 1 queueing system ( l ) we present the equation which satisfies the transient distribution of l ( t ) for the three special cases m / m / 1, gi / m / 1 and m / g / 1 queue of gi / g / 1 queueing system, and proves that the length l ( t ) of gi / g / 1 queueing system satisfy three types of equation, and their minimal nonnegative solution are unique bounded solutions
歸納了馬爾可夫過程和馬爾可夫骨架過程的有關的初步知識。然後，本文重點討論了當前在gi g 1排隊系統中待研究的如下幾個問題： （一） gi g 1排隊系統的非平衡理論（ 1 ）給出gi g 1排隊系統及其三個特例m m 1 ， gi m 1和m g 1排隊系統的隊長l （ t ）的瞬時分佈所滿足的方程。證明gi g 1排隊系統的隊長l （ t ）滿足三種不同方程，並且是這些方程的最小非負解，也是唯一有界解。 -
In queueing theory, the research on gi / g / l queue have been continued for decades of years. by the end of last century, the integral representation of its transient distribution of the queue length has been obtained. in this integral representation, the integrated term can be determined recursively by a system of kolmogorov differential equation
在排隊理論中，關于gi / g / 1排隊系統的研究，延續了幾十年，直至上個世紀末，方得到了它的瞬時隊長分佈的積分表示，在這個積分表示中，其被積項可以由一組柯爾莫洛夫偏微分方程遞歸地確定。 -
In this paper, some off - line manual methods for regulation of flow equation have been compared and analyzed. based on pid speed governor of turbines, two kinds of governors are designed for adjustable - blade pump, which can perform autoregulation on water height of the fore bay and on pump output by adjusting the blade angle of adjustable - blade pump. the computation models of the two kinds of governors are also offered and the transient simulation can be done on pc
文中，比較分析了現有的多種離線手動調節流量平衡的方法，在水輪機pid調速器的基礎上，針對轉槳泵設計了兩種新型調節器，通過改變轉槳泵的葉片安放角，分別能對泵站前池水位和泵的輸出流量進行自動調節；提出了兩種新型調節器的計算模型，使轉槳泵在線自動調節動態模擬得以在微機上得以實現。 -
According to the physical model, a mathematical model and computational method were proposed. an axially symmetric transient thermal conduction equation was put forward, which included material pyrolysis, pyrolysis gas flow and chemical reaction in charred layer. chemical reaction was controlled by chemical dynamics, and the reaction rate was computed using arrhenious equation
針對物理模型提出了相應的數學模型和數值計算方法，在材料內部建立了二維軸對稱的非穩態導熱控制方程，其中加入了材料熱解、熱解氣體流動以及炭化層內的化學反應等因素的影響，化學反應由化學動力學控制，通過arrhenius公式確定其反應速率。 -
Several transient simulation programs have been developed based on the models above, and were put into practice of the transient simulations of following : ( 1 ) autoregulation on water height of the fore bay in single pump station, and the influence of governor parameters ; ( 2 ) autoregulation on output of adjustable - blade pump in single pump station, and the influence of governor parameters ; ( 3 ) on - line autoregulation on flow equation of multilevel pump stations system
本文應用上述方法編制了過渡過程模擬程序， （ 1 ）進行了單級泵站中轉槳泵在線自動調節泵站前池水位的動態模擬計算，並對調節參數的影響做了比較研究； （ 2 ）進行了單級泵站中轉槳泵在線自動調節泵輸出流量的動態模擬計算，並對調節參數的影響做了比較研究； （ 3 ）進行了多級泵站中轉槳泵在線自動調節輸水系統流量平衡的動態模擬計算。 -
Space - time finite element method for transient heat conduction equation
瞬態熱傳導方程的時空有限元法 -
According to the heat conduction spreading only in the direction of local surface normal on infinitesimal control surface and laser machining reaching steady state instantaneously, a three - dimensional transient partial differential equation was translated into a one - dimensional constant differential equation
根據在微元控制面上熱傳導只發生在表面法向，並且激光加工在暫態達到準穩態，將三維暫態偏微分方程轉化為一維常微分方程。 -
The mathematical model of non - linear transient magnetic field excited by voltage source is established in this paper. it coupled with electric circuit equation and mechanical motion equation, could solve the transient problem excited by voltage source, and the effect of the eddy currents, non - linearity in magnetic materials and mechanical motion of medium is taken into account
文中建立了電壓源激磁下的非線性瞬態磁場的數學模型，通過把瞬態磁場方程、電路方程及機械運動方程耦合在一起，得出求解電壓源激磁下，考慮鐵磁材料的非線性、導電媒質的渦流及媒質機械運動等條件下的瞬態過程問題。 -
Solving the rate equation numerically, the influence of the factor a and the reflectivity r on the transient characteristics of the ecld has been analyzed when the shape of the hysteresis loop looks like a parallelogram approximately
通過對速率方程組進行數值求解，分析了當ecld雙穩環呈現近似的平行四邊形時，譜線展寬因子和ld鍍膜端面反射率r對雙穩跳變瞬間動態特性的影響。 -
Nonlinear electric field transient finite element equation is performed based on the backward euler method and the variational principle
摘要基於後退歐拉法和變分原理推導了非線性電場的暫態有限元方程。 -
Abstract : based on the analysis of the pressure equation of filling flow in injection molding, finite - element method is employed to solve the transient pressure field with moving free form boundary
文摘:在分析注塑充填流動壓力方程的基礎上，採用有限元方法求解充填過程中非定常、具有移動邊界的壓力場。 -
The differential equation of flexible rotor operating unsteadily is also derived and solved, its transient dynamics responses under different accelerations are obtained with simulink ' s program. the amplitude, phases and advancing angular velocity of response along with rotational speed and time under different accelerations are discussed. the responding conclusions have been reached
同時，建立了單盤轉子的瞬態運動方程，用simulink程序求解了所建立的瞬態方程，模擬得到了它在不同加速度下的瞬態動力響應，並就不同加速度下的振幅、相位、進動角速度隨時間和隨轉速的響應分別作了較詳細的討論，得出了相應的結論。
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