積分微分的 的英文怎麼說

中文拼音 [jīfēnwéifēnde]
積分微分的 英文
integro differential
  • 積 : Ⅰ動詞（積累） amass; store up; accumulate Ⅱ形容詞（長時間積累下來的） long standing; long pending...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 的 : 4次方是 The fourth power of 2 is direction
  • 積分 : 1. [數學] integral; integrate; integration 2. [體育] （積累的分數） accumulate points
  1. The approximation of the parabolic integro - differential equations is studied with anisotropic biquadratic finite element

    摘要研究具有各向異性特徵的雙二次元對拋物積分微分方程進行了逼近。
  2. In chapter two, we consider full disceret scheme of mixed finite element methods for the following initial - value problems of linear integro - differential equations of parabolic in this chapter, we give the error analysis of this full discrete scheme and get optimal error estimates for the discrete solutions of u and p

    第二章討論下述線性拋物型積分微分方程初邊值問題混合有限元方法的后差全離散格式。給出了該全離散格式的誤差分析，得到了離散解逼近未知函數u以及伴隨速度p的關于空間和時間的最優階誤差估計。
  3. In addition, for general erlang ( n ) risk model, an integro - diifcrontial equation for the probability of ultimate ruin are presented : dickson arid hipp ( 2001 ) consider the erlang ( 2 ) risk model, and introduce the expectation of the discounted penalty h ' ( u ) which determines the joint and the marginal distribution of the time to ruin ( t ), the surplus prior to ruin ( u ( t - ) } and the deficit at ruin ( | u ( t ) | )

    Dicksonandhipp （ 2001 ）同樣考慮了erlang （ 2 ）這種風險模型，並介紹了破產時的罰金折現期望w （ u ）這一概念。由罰金折現期望可得到破產時刻（ t ） ，破產前的瞬間盈餘（ u （ t ? ） ）和破產時的赤字（ u （ t ） ）的分佈和它們的聯合分佈，並給出了罰金折現期望滿足的一積分-微分方程，由此方程得到了罰金折現期望的拉普拉斯變換。
  4. Integrability proof of three kinds of integral differential equations

    三類積分微分方程可積性的證明
  5. By using the asymptotic analysis method and the diagonalization technique, considers the singular perturbation of boundary value problem for system of third order nonlinear integro - differential equation. under appropriate assumptions, the existence of the solution of perturbation problem has been proved and a asymptotic expansion of the solution and the estimation of the corresponding remainder term are geven as well

    研究三階非線性積分微分方程組邊值問題的奇攝動.在適當的條件下，利用漸近分析方法和對角化技巧，證得解的存在性並給出解的漸近展開式及其餘項估計
  6. In the third part, for a class of parabolic integro - differential equations we obtained ultra - approximation between u and its ritz - volterra projection which leads to a ultraconvergence alternating theorem

    最後，我們對一類拋物型積分-微分方程獲得了真解與ritz - volterra投影之間的強超逼近估計，並在此基礎上得到了一個強超收斂二擇一定理。
  7. In the dissertation, a novel hybrid excitation constant voltage synchronous generator is adopted to improve the system performance, which takes the advantages of both electrical excitation and permanent magnet machines. a parted configuration is presented in order to design the structure of the generator. the adaptive digital adjustment is settled in principle using the single chip microcomputer 80c31 as the control core of the voltage regulator and adopting the proportion - integral - differential control as the control arithmetic, then a sample is made

    論文對同步發電機的工作原理、性能特點、電機本體以及電壓調節器的硬體和軟體設計進行了研究，針對稀土永磁同步發電機變載、變轉速情況下輸出電壓不可調的不足之處，採用一種新穎的電機型式? ?自適應復合勵磁恆壓同步發電機，綜合了永磁發電機和電勵磁發電機的優點，提出一種磁路分開的結構進行電機本體的設計，並選用單片機80c31作為電壓調節器的控制核心，比例?積分?微分控制（ pid ）作為其控制演算法，從原理上較好地解決了其電壓的自動數字調節，並試制了一臺樣機。
  8. To accept the current signal from high negative voltage circuit, the analog ground is raised to a certain positive voltage, which makes it possible for the signal amplitude to be compressed at the same time of its polarity reversion. a pi control program special for laser gyro current control is brought forward according to the conventional pid control method, in which the control signal is figured out corresponding to the difference between the sample and the reference value by turn of proportion - short step integral - long step integral. and at the end of this paper, a comparison of system performance on different conditions is made and the key elements influencing system performance are educed

    利用集成a / d 、 d / a轉換器的新型晶元aduc824 ，實現了電流（電壓）采樣?數據處理?電流控制的閉環控制結構；地電位的抬升解決了a / d轉換器對負高壓迴路電流采樣時的輸入范圍匹配問題；控制信號反相的同時進行幅度壓縮，使得輸出調整電壓的解析度提高；根據常規的比例?積分?微分（ pid ）調節模型，針對陀螺系統的特性，給出了一種可以滿足系統要求、據采樣值偏差大小進行的比例?大步長積分?小步長積分、分層次比例?積分演算法；不同條件下系統穩流性能的對比、分析在論文最後給出，並據此找出了決定該系統穩流精度的關鍵因素，提出了系統的改進意見。
  9. Firstly, we investigate the dirichlet problem ' s comparison principle on a bounded subset for this fully nonlinear intergro - differential equation, at the same time we must assume the measure in the intergro - differential item is absolute continuous

    首先研究這類完全非線性積分微分方程在有界區域上dirichlet問題的比較原理，此時須假設積分項所涉及的測度是絕對連續的。
  10. The innovative ideas in this paper is to replace the linear fixed - gain pid controller for a nonlinear pid controller. based on the step response curves of conventional control system, we analyze the ideal variety of three gains in different times and construct the simulated curves of proportional, intergral and derivative gain. the controllers has considered all sorts of imperceptible factors affecting the servo performances in a lpmsm servo system, which include the parametric uncertainties brought by the changes of the mobile mass, the dynamitic performance of the system and the size of input. to solve the problem of so many unknown parameters, we use transmit arithmetic to find the parameters which are fit for the system. to keep the robust and stable performance

    本文的創新之處在於，將傳統的固定增益的pid控制器用非線性pid控制器來代替，並在此基礎上，就一般控制系統的階躍響應曲線，分析了在不同響應時間階段pid的三個增益調節參數的理想變化情況，並根據這些理想變化，分別給出了比例、積分、微分增益參數的一種連續的非線性擬和函數。在分析雙位置環時，仔細考慮了能使系統性能變壞的各種因素，如系統的動態性能及控制出入能量的大小等等。
  11. This paper is concerned with numerical stability of one - leg - methods when applied to nonlinear integro - differential equations ( ides ). the sufficient conditions for the methods to be stable are derived

    摘要該文研究非線性積分微分方程單支-方法的數值穩定性，獲得了方法數值穩定的條件。
  12. Asymptotic solution for a class of nonlinear integro - differential reaction diffusion equations

    一類非線性積分微分反應擴散方程的漸近解
  13. In chapter one, we consider the characteristics - mixed finite element numerical simulation for the euler equation for an incompressible fluid with zero viscosity in two dimensions

    本文討論了兩類發展方程二維不可壓無粘流問題和線性積分微分方程的數值模擬。
  14. 2. based on the original bp network, some improvement on error back propagation arithmetic is made. the executing speed of the algorithm is increased through online adjustment of learning rate. combined with traditional pid control, this method generated two integral schemes : bp network + pid serial control and self - confirming control of parameters of pid controller based on bp network are constructed

    在原有的誤差反向傳播（ bp ）網路的基礎上，對其學習演算法進行了改進，通過在線調節學習速率，提高了演算法的實現速度，並且與傳統的比例積分微分（ pid ）控制方法進行結合，分別實現了兩種集成方法： bp網路與pid串列控制方法和基於bp網路的pid參數自整定控制方法。
  15. In this paper, we consider mixed finit element methods for the initial - boundary value problems of two order hyperbolic equations and linear integro - differential equations of parabolic type, obtain the error estimates of the discrete schemes for this two kinds of problems. in chapter one, we consider the expanded mixed finite element methods for the followling 2nd order hyperbolic problems this method expands the standard mixed formulation in the sense that three variable are explixitly treated : the scalar unknwon, its gradient and its flux

    本文討論了二階雙曲方程和線性拋物型積分微分方程方程初邊值問題的混合有限元方法，得到了這兩類問題混合有限元離散格式的誤差估計。第一章討論二階雙曲初邊值問題的擴展混合元方法。該方法能同時逼近未知函數、未知函數的梯度和流體的流量，較好的模擬了帶有混合型邊界條件的二階雙曲問題。
  16. Error eestimates for mixed finite element methods for hyperbolic type integro - differential equation

    雙曲型積分微分方程混合元法的誤差估計
  17. Initial value problems for first order nonlinear impulsive integral - differential equations

    一階非線性脈沖積分微分方程的初值問題
  18. Asymptotic stability of a class volterra integro - differential equations with infinite delay

    積分微分方程的漸近穩定性
  19. A highly accurate derivative recovery formula to integro - differential equations

    積分微分方程的一個高精度導數恢復公式
  20. Asymptotic stability for a class of integro differential equations with infinite delay

    一類具無窮時滯的積分微分方程
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