有限離散系統 的英文怎麼說

中文拼音 [yǒuxiànlísǎnxìtǒng]
有限離散系統 英文
finite discrete system
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 離 : Ⅰ動詞1 （離開） leave; part from; be away from; separate 2 （背離） go against 3 （缺少） dispens...
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 有限 : limited; restricted; finite; a little; not much
  • 離散 : dispersed; scattered about; separated from one another; spread; debunching; straggling; fringing;...
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  1. Output can be obtain, next we use our designed the wavelet soft threshold to select result of the wavelet transform, finally, we give the selected result reversal wavelet transform. it is obvious : the wavelet soft threshold is important to improve the quality of the gray image processing. i give the donoho wavelet soft threshold a modified value method, which has a relation with ratio of signal - noise. i made full use of discrete hop field single feedback neural network, and nonlinear steady of automatic system at last, i obtained a steady limited ring, give the energy function an order differential a optimal

    我的思路是：改造現有圖形結構，先建立能反映信噪比大小且含待定參數k的表達式，然後通過離散型h0pfi舊單層反饋神經網路，再結合前邊的混合濾波器構成一個非線性控制系統，寫出對應的網路函數，利用相平面法和李雅普諾大穩定性的判據，得到一個穩定的極限環，從而確定出參數卜的范圍，進而再對原來的小波軟閾值進行修正，用修正後的值作為小波閾值。
  2. Chapter 4 time - dependent computational simulation of the response of cable - suspension feed system in gusty wind based on the time - independent structure finite element method, and with consideration of the movement laws of cabin, a 3 - d time - dependent structure finite element model formulated by a new method named iss method ( instantaneous structure supposition method ) to deal with the vibration response of cable - suspension feed system in gusty wind is presented. in the model, all sources of geometric non - linearity, cable sag and changes of cable geometry due to large displacement, are fully considered

    基於時不變結構的有限單元法，在綜合考慮饋源艙運動規律的基礎上，提出了時變系統的瞬時結構假定法，通過將懸索離散為索桿單元，建立了系統的時變有限元模型，該模型充分考慮了懸索的垂度和大變形等幾何非線性因素，應用ne 。
  3. Presents the model proposed for analyzing the vibration characteristics of shrouded blades and their calculation method by employing a wave propagation theory and modal synthesis technology coupled with a finite element method from the view point it is possible not only to conduct frequency modulation of the shrouded blades of a gas turbine, but also to utilize the friction effects between them to dissipate energy, thereby attaining the aim of vibration alleviation, as shrouded blades have been widely used in the design of high - speed turbomachinery, such as modern gas turbines and steam turbines, and with the shrouded blades forming an integral whole in a centrifugal force field, the vibration characteristics of the whole ring of blades are different from those of a single isolated blade, and this makes it essential to take into account the integral effect of blade shrouds, concludes from the calculation examples and engineering application that the above approach is valid and correct along with the possibility of considerably reducing the scale of calculation and analysis, and points out it is necessary to take into consideration the coupled effect of the whole ring of blades while the dynamic characteristics of shrouded blades is being analysed

    帶冠葉片不但能調頻，還可以利用葉冠之間的摩擦效應來耗散能量，達到減振的目的.帶冠葉片在離心力場中形成一整體，其整圈葉片振動特性不同於單個孤立葉片，需考慮葉冠的整體效應.利用帶冠葉片系統的循環對稱性，提出了採用波傳播理論和模態綜合技術，結合有限元方法研究燃氣輪機帶冠葉片振動特性的分析模型和計算方法.算例和工程應用證明了該方法是效性的、正確的，並可以大大降低計算分析規模.研究表明帶冠葉片動力特性分析時必須考慮整圈葉片的耦合效應
  4. In the paper, with system energy balance method and heat conductive equations ， on tne basis of short time heat transfer modeling established the long time modeling, considering heat interference in thermal well group. this paper used the finit element method for element division and computer analysis, and provided the operation temperature figure. acquired computation values agreed well with experimental results, the most difference between them was 5. 13 %

    本文採用系統能量平衡結合熱傳導方程，在淺埋套管式換熱器短期傳熱模型基礎上建立了長期傳熱模型，並考慮了管群熱干擾對模型的影響。並運用有限單元法軟體編程進行離散和計算機分析，得出模擬溫度場，其模擬值與實測的均值基本相符，兩者最大誤差小於5 . 13 % ，表明該模型具有一定的合理性和實用意義。
  5. The super resolution effect of sb layer super resolution structure is also investigated with near - field scanning optical microscope. in addition, a rigorous three - dimensional ( 3d ) optical electromagnetic finite - difference time - domain ( fdtd ) model for analysis of a sil system is detailed. in order to accurately analyse sil model, a new method of setting a focused gaussian beam source in fdtd grids is presented

    此外，本文還建立了對sil系統光傳輸特性進行模擬的時域有限差分程序，提出一種在fdtd模擬的離散空間設置會聚高斯光源的新方法，並模擬了會聚高斯光束在sil系統中的傳輸，研究了sil在不同離焦情況下底面出射光場幅度及光束半徑的變化規律，為sil存儲系統的優化設計提供了理論依據。
  6. Fist ly, use mass equivalent method to predigest the original rotor system. secondly, use transfer matrix arithmetic to have finished the relative program to calculate the critical speed of flexible multi - tray rotor bearing system by matlab language. thirdly. finish program the unbalance response using riccati - transfer matrix arithmetic and finity buck arithmetic. fourthly, answer to the high vibration of uncontroled system when cross the critical speed, come out to adopt changing clearance damper bearing to control the viberation

    本文對多柔盤轉子-支承系統的振動現象做了以下初步探索：用質量離散化方法把原轉子系統簡化；採用matlab語言編制了對傳遞矩陣法計算多柔盤轉子-支承系統的臨界轉速；用matlab語言對riccati傳遞矩陣法和有限元法編制了程序計算系統的不平衡響應；並針對其過臨界轉速時振動較大的現象，提出採用變間隙控制油膜剛度和阻尼，從而使原系統的在特定轉速（臨界轉速）的一段范圍內不平衡響應減小；並從被動控制與主動控制兩方面進行數值模擬，取的了較好的控制效果。
  7. The primary advantage that elliptic curve systems have over systems based on the multiplicative group of a finite field ( and also over systems based on the intractability of integer factorization ) is the absence of a subexponential - time algorithm ( such as those of index calculus type ) that could find discrete logs in these groups

    與基於有限域的乘法群系統（及基於整數分解的難解性之上的系統）相比，橢圓曲線系統的優勢在於，迄今為止還沒找到這類群上離散對數的次指數時間演算法（如微積分類）
  8. There are two implementations for discrete reaching law, both has obvious strongpoint and limi - tations. so the two was synthesized. simulation results showed that the discrete vsc is easier to be implemented by computer control system, and go further in decoupling between chattering control and system dynamics, while the robustness is not so good as continuous time vsc

    本文的另一項工作是在連續系統的基礎上，討論了離散時間變結構控制策略和抖振控制，針對控制量加速度不足，提出了離散趨近律的兩種實現方式，由於兩種實現方式同樣具有明顯的優缺點，因此將兩種方式結合起來，增加了兩個與滑模面平行的切換面作為系統在兩種方式之間切換的界限，並通過計算機模擬驗證控制效果。
  9. 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。
  10. The 00 ( object - oriented ) technique of standard template library with ansi / iso c + + is used in designing the program, and the dynamic access mechanism and the startup with zero content are realized by using the specialization and inheritance object of vector template class as the data container which can change the content itself according to the number of discretization node data of a computing practicality. so, the fact that the use of the static ems memory which is not necessary is avoided

    在設計面向對象有限元程序中運用了基於ansi isoc + +標準模板庫（ stl ）的技術，以向量模板類的特化繼承對象為變容量數據容器，實現了可按計算實例的離散結點數量動態存取數據的機制和數據容器的零容量啟動，從而避免了運算時系統對靜態內存空間的超量佔用。
  11. Thirdly, it is supported by java technology. java language is not only a right programming language to build agent, but also it has some characters such as architecture neutral and higher safety, running java applet, program can increase the functions of the client, lighten the burden on the server, as well as can operate the client contents according to the privilege assigned, and in order to increase the safety of system. finally, in the thesis, by using the knowledge related probability and statistics, author puts forward a kind of method which can make the grade mark quantifying, and with this method, the problem which is how to get an accurate evaluation for the subjective test questions that learners answer in exam, is solved primely

    本文針對以上缺點，提出基於agent的個性化遠程教學系統，本系統中引入分散式人工智慧（ dai ）領域中的agent技術，在系統中構造一個學習者agent ，它隨時跟蹤學習者的學習過程，記錄其興趣、愛好等個性特徵，並適時地調整對其採用的教學策略，有效地解決了目前的系統智能性較低的缺點；其次，本系統採用xml技術來組織教學內容，改變了html中內容和形式捆綁在一起的缺點，使得內容和形式相分離，從而可以為太原理工大學碩士學位論文不同認知水平的學習者提供不同的教學內容，增強了交互功能;另外，本系統採用java技術， java語言不僅適合作為agent的開發語言，而且java語言具有平臺無關和安全性高的特點，通過運行javaapplet來增強客戶端的功能，減輕服務器端負擔，並且這些appiet根據客戶賦予的權限對客戶端內容進行操作，增加了安全性;最後，本文運用概率論與數理統計學中方法，提出一種把等級成績數量化的方法，很好地解決了對學習者考試中主觀題的準確評價問題，為實現個性化教學提供了一個較準確的依據。
  12. The paper establishes mathematics model of electromagnetic heating system of eddy current field and temperature field, and gives corresponding discrete format with elements as eight nodes, hexahedron equal cell, through calculating eddy - current field to gain the internal heat source that the temperature field needed, to use discrete method to solve the problem of induction - heating part ' s temperature field by axial symmetrical electromagnetic, and then to analyze the characteristic of instantaneous temperature field

    本文建立了電磁加熱系統的渦流場和溫度場間接耦合的數學模型，分析了不同頻率下渦流和溫度的分佈情況，並以八節點六面體等參元為例給出了渦流場對應的離散格式，通過計算渦流場獲得溫度場所需要的內熱源強度，加熱部件的溫度場以軸對稱格式進行離散求解，並對瞬態溫度場有限單元法的求解特點進行了分析。
  13. Hence analysis and design of nonlinear sampled - data systems has been, in recent years, a subject of growing interest in the international community of control research. when a continuous - time plant is controlled using a digitally implemented controller, it is often faced that a continuous - time plant is transformed into its equivalent discrete - time model. a digital controller is usually designed on the base of approximate discrete - time models of the continuous - time nonlinear systems because it is difficult to obtain the closed form of the exact discrete - time model for nonlinear control systems

    利用計算機等一類離散控制裝置來控制連續時間的受控對象時，都會遇到把連續時間系統化為等價的離散時間系統的問題，通過采樣器和保持器來實現離散時間的采樣控制，對于非線性連續受控系統，由於連續系統的時間離散化后一般得不到其等價的精確離散化模型表示的有限形式，實際上由其近似離散化模型代替來設計控制器，而近似會引起信號失真，那麼基於近似離散化模型上設計的采樣控制器，它是否同樣對原連續受控系統有效
  14. In order to overcome the restriction of classical approaches of stability for linear time - invariant discrete large - scale systems, we study the stability for large - scale systems with unidirectional strong coupling among subsystems in chapter 2

    為了克服傳統大系統穩定性分析方法的局限性，在第二章研究子系統間具有單向強耦合的線性定常離散大系統的穩定性問題。
  15. A fast computation algorithm is put forward for the exact determination of the specified step controllable region of constrained discrete - time lti system, which st

    基於凸多面體集合的幾何特性，給出了離散時間有約束線性時不變系統有限步可控域的一種快速精確演算法； 3
  16. When the network - induced delay is less than and more than one sampling period, the augmented state vector method is used respectively to model the system as a finite - dimensional discrete - time lti ( linear time - invariant ) system

    在網路誘導時延小於和大於一個采樣周期的情況下，分別利用增廣狀態向量法，將系統建模為有限維離散時間線性時不變系統。
  17. The control equation consist of completely coupled deformation equation, seepage equation, conduction and convection equation of heat, which describe the reservoir non - liner performance. 2, present the detailed strategy and methods to solve this mathematics model, the basic strategy as follows : regard the deformation equation ? seepage equation conduction and convection equation of heat as separate system, and solve the equation by coupling and iterative method ; disperse the control equation in the geometry field by the finite element method ( galerkin ), and in the time field by the finite difference method : programme the computer program on this task ; when the solving, take the combinative measures of the thick and thin mesh ; successfully carry out the numerical simulation in vast 3d heat extraction system of hdr

    2 、提出了高溫巖體地熱開發的固、流、熱多場耦合數學模型的數值解法，其基本的求解策略是：將固體變形，流體滲流與溫度場方程看成獨立的子系統，耦合迭代求解；利用有限元離散（ galerkin ）方法將控制方程在幾何域上離散，並用差分法得到時間域上的離散方程，並在此基礎上，編制了相應的計算機源程序；有限元求解中，為減小邊界效應的影響，在計算中採取粗細網格結合的方法，順利地實現了高溫巖體地熱開發三維巨系統的數值模擬。
  18. In basic action layer ' s designing, it uses a fuzzy - pid control algorithm that brings the system with a good dynamic and static performance. in the whole decision - making process, the protean situation on the competition ground is expressed by an artificial intelligence method for describing the state space that is constituted by selecting a small number of discrete representative states. desired actions are set for every robot based on the tasks of the system and the strategy

    其中在進行基本動作層的設計時，採用了模糊控制與pid控制相結合的智能控制演算法，使系統具有良好的動、靜態品質；而在進行整體決策時，採用了人工智慧的狀態空間表示方法，在比賽場上瞬息萬變的態勢中選擇少量的具有代表性的離散狀態來構成狀態空間，再根據系統需要完成的任務，為機器人確定有限的動作集合，並通過決策推理，給每個機器人選擇合適的動作，從而決策得出機器人的左右輪轉速值，實現對系統的實時控制。
  19. When impact applies on a discrete system in which one of constraints is a constant with coulomb friction, the phenomenon of slip - stick at the point can cause the change of friction and the integration for frictional force during infinitesimal impulsive interval becomes impossible according to traditional impulsive dynamics of discrete systems. by introducing a new dimensional time parameter, first - order momentum - impulse differential equations are obtained and the discussion over infinitesimal impulsive interval is transformed into a piece - wise study on the finite region of impulse

    在引入新的無量綱的時間參數后，通過建立相應的動量-沖量的一階微分方程，在趨近於零的沖擊區間的討論變為在有限區間中來分段研究含滑動-黏滯的沖擊過程，得到了受到多點打擊的離散系統考慮庫侖摩擦時的動力學的求解方法，即根據沖擊前的初始狀態無需回到繁瑣的微分方程的求解便可以得到沖擊后系統的動力學響應。
  20. The characteristic value of the so - called inverse algebraic eigenvalue problem is that under certain restrict conditions against the question, elements of matrix are determined according to eigenvalue or eigenvector. the practical inverse alebraic eigenvalue problem arose in phisical chemistry in the study of molecular structures. it arises in various areas of application in a lot of filelds, such as dispersed system of physical mathematic, design of vibration system of the structure, correct and control, particle nuclear spectroscopy, linear variable control system and so on

    所謂代數特徵值反問題就是在一定的限制條件下，根據給定的特徵值或特徵向量決定矩陣的元素，它是在研究物理化學中研究分子結構時發現的。矩陣特徵值反問題在數學物理反問題的離散系統、結構振動系統的設計、校正與控制、粒子物理的核光譜學、線性多變量控制系統的極點配置等許多領域都具有重要的應用。
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