逼近引理 的英文怎麼說

中文拼音 [bījìnyǐnlǐ]
逼近引理 英文
approximation lemma
  • 逼 : Ⅰ動詞1 （逼迫; 給人以威脅） compel; force; drive; threaten 2 （強迫索取） extort; exert pressure ...
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 引 : Ⅰ動詞1 （牽引; 拉） draw; stretch 2 （引導） lead; guide 3 （離開） leave 4 （伸著） stretch 5 （...
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 逼近 : 1 （靠近 接近） press on towards; gain on [upon]; approach; crowd on; close in on; draw near 2 [...
  1. In recent years, nonlinear methods have attracted more and more attention and there have been some successful cases, such as median filter, mathematical morphology, etc. as a preferred way to inverstigate nonlinear numerical problems, the continued fractions method can effectively express the gradually changing data or abrupt data, so it is meaningful to study image processing by means of the continued fractions theory and algorithms

    近年來在圖像處理領域，利用非線性方法進行圖像處理取得較好效果的有中值濾波、數學形態學等，非線性方法已引起越來越多研究者的重視。作為研究非線性數值問題的首選方法?連分式方法，不僅能反映數據的漸變性，也能反映數據的突變性。鑒于這些原因，本文將連分式插值和逼近引入到數字圖像處理領域，開展了圖像插值、圖像重建等方面的研究。
  2. Taking the vr step motor as example in the paper, systemic research is conducted about the principle of the subdividing drive, the non - linearity relationship between microstep and phase current, the method of velocity adjusting and the interrelated factors. the system is designed to realize the subdividing drive, velocity adjusting and position. especially, there are two innovations in this paper. one is the first introduction of pld device and isp technology to the design of phase sequencer, the other is the new measure and amend method of microstep

    本文以三相反應式步進電機為實例，對細分驅動原理、細分驅動的非線性、變細分調速以及相關影響因素進行系統的研究；實現細分驅動器、調速控制、定位控制和軟硬介面的設計。在此基礎上，本文對細分驅動環形分配器的設計和微步距測量修正進行了創新；提出將pld器件和isp技術引入到細分驅動環形分配器的設計思想和錯位測量和逼近修正法。
  3. The transient mathematical equations are addressed for the coupled heat and moisture transfer by taking account of moisture accumulation procedure. an analytical method by means of the transfer function is proposed to predict the transient distributions of temperature and moisture content at different interfaces in walls. a numerical analysis approach based on an efficient finite - difference method is developed to deal with the procedure of coupled heat and moisture transfer in a multilayer wall with nonlinear boundary conditions considered

    建立了考慮濕積累過程的瞬態熱濕耦合模型，在方程中引入了濕積累項；發展了一種傳遞函數解析方法進行墻體內不同剖面處溫度和含濕量的動態預測；首次提出了一種基於有效有限差分法預測非線性邊界條件下多層多孔結構內的傳熱傳濕過程的數值分析方法，求解過程中考慮了瞬態邊界條件，從而避免了通常處理中由於邊界條件設定為常數而給計算帶來的誤差，對于多層結構每一層物性參數的非連續性，則採用了有效的有限差分逼近處理。
  4. In the second chapter, firstly, i present some marks and definitions, then discuss several le. mmas that closely relate to the primary theorem of this paper. successively, i introuduce relative malgrange preparation theorem, the approach theorem of relative map - germs, and the approach theorem of relative map - germs with single parameter family and so on

    第二章首先給出一些記號和定義，然後討論與本文主要定理密切相關的一些引理，先後介紹了相對malgrange預備定理，相對映射芽的逼近引理，以及單參數族相對映射芽的逼近引理等。
  5. Lastly, aiming at the poor results which all current algorithms do for directional textures, and cannot synthesis texture directly, aiming at the particularity of this kind of textures, we bring forward the conceptions of non frontal parallel textures and frontal parallel textures. by analyzing texture ' s direction through fourier spectrum, we introduce the conception of main direction, and solve the approximation value of texture ' s main direction by discrete approximated approach. by this way, we can synthesis indirectly simple structural non frontal parallel textures

    最後針對現有演算法對帶有方向的紋理合成效果差，無法直接合成紋理圖像的難點，本論文首先提出了非正平行紋理與正平行紋理的概念，分析了它們之間的內在聯系，引入了兩個角度參數來描述紋理的朝向，採用傅立葉頻譜法分析紋理的方向特性，並提出了紋理主方向的概念，本論文引入離散逼近的方法來求解出紋理主方向的近似值，這樣我們就能用一種間接的方法合成簡單的結構性非正平行紋理。
  6. After introducing the unified model structure and applying stochastic approximation principle, the general recursive identification algorithm of several on - line identification methods is developped

    在引進統一的模型結構以後，利用隨機逼近原理，提出了各種在線識別演算法的一般遞推形式。
  7. Based on them, parameter approach analysis method of design segmental reasonable state is introduced, which has only iteration in due direction, and more efficient than present backward analysis, backward - forward iteration analysis and non - stress state method as well as more stable because of introduction of iteration parameter

    基於此，提出了設計（施工）節段合理狀態分析的參數逼近法。因只需正向迭代計算，比目前倒退分析、前進倒退交替分析法及無應力狀態法具有更高的效率，又因引入迭代控制參數，而具有更好的穩定性。
  8. In this paper, we study the periodic solutions of the impact oscillator with damping. first part, using continuation lemma and approximation method, we prove the existence of 2 - periodic admissible solutions for a class of second order bouncing differencial equations with damping

    在第一部分里，我們運用延拓引理與逼近框架，對於一類帶阻尼的二階碰撞方程，證明了2 -周期碰撞允許（ admissible ）解的存在性。
  9. Secondly, using the relation between the weighted modified k - functional, the weighted modulus of smoothness, the weighted main - part modulus of smoothness. we get the pointwise direct and inverse approximation theorem with jacobi weight for s ' zdsz - kantorovich operator. thus some results on w ( x ) = 0 ( w ( x ) denotes the weight function ), ditzian - totik modulus and classic modulus are extend

    其次，引入一種改變的帶權k -泛函，利用帶權光滑模和帶權主部光滑的關系及帶權光滑模與改變帶權k -泛函的等價性，關于sz sz - kantorovich運算元，討論了一階矩不為零的運算元的點態帶jacobi權逼近正定理及等價定理，推廣了已有的權為零及ditzian - totik光滑模和古典光滑模的結果。
  10. Control systems in modern automatic engineering are nonlinear, time - changed and indefinite. lt is difficult to model by traditional method, even sometime impossible. under these circumstances we should apply model identification to gain the approximate model of object for effective control, there are many models to be chosen, fuzzy model is one of them, it is put forward with the development of fuzzy control. fuzzy model has characteristics of general approximation and strong nonlinear, it is fit for describing complex, nonlinear systems. to avoid rules expansion when the number of input values are very big. in this paper we apply hierarchical fuzzy model to resolve this problem, we also illustrate it has general approximation to any nonlinear systems. genetic algorithm is a algorithm to help find the best parameters of process. lt has abilities of global optimizing and implicit parallel, it can be generally used for all applications. in our paper we use fuzzy model as predictive model and apply ga to identify fuzzy model ( including hierarchical fuzzy model ), we made experiments to nonlinear predictive systems and got very good results. the paper contains chapters as below : chapter 1 preface

    現代控制工程中的系統多表現為非線性、時變和不確定性，採用傳統的建模方法比較困難，或者根本無法實現，在這種情況下，要實現有效的控制，必須採用模型辨識的方法來獲取對象的近似模型，並加以控制，目前用於系統辨識的模型種類很多，模糊模型是其中的一種，它隨著模糊控制的發展而被人提出，模糊模型具有萬能逼近和強非線性的特點，比較適合於描述復雜非線性系統，為了解決模糊模型在輸入變量較多時規則數膨脹的問題，文中引入遞階型模糊模型，並引證這種結構的通用逼近特性。遺傳演算法是模擬自然界生物進化「優勝劣汰」原理的一種參數尋優演算法，它具有隱含并行性和全局最優化的能力，並且對尋優對象的要求比較低，在工程應用和科學研究中，得到了廣泛的應用，本文將遺傳演算法引入模糊模型的辨識，取得了很好的效果。
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