time-varying system 中文意思是什麼

time-varying system 解釋
變系數控制系統
  • time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
  • varying : 變化的
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. ( 4 ) the global bifurcations and chaotic dynamics are investigated when the rotor - ambs system has the time - varying stiffness

    （ 4 ）研究了電磁軸承-轉子系統在變剛度情況下的全局分叉和混沌動力學。
  2. A channel estimator for multi - carrier system in fast time - varying fading channels

    一種快時變通道下多載波傳輸系統的通道估計方法
  3. A generalized minium variance pole assignment pid self - tuning controller can be used for the system with gentle time - varying delay. the controller algorithm is simplified. its effectiveness has been shown in many simulation uses

    在考慮系統時滯特性的情況下，提出了適合一類時滯系統的廣義最小方差極點配置自校正控制器，並對控制器演算法進行了簡化，使該控制器簡單易行，適應性強，模擬結果表明它的有效性。
  4. Application of mixed neural network in slow time - varying system control

    混合網路在慢時變系統中的應用
  5. In this paper the effect of the track twist irregularity on the train derailment safety is analysed on the basis of dynamic analysis of train - tangent - track space - coupling time - varying system, and the limitation of the track twist irregularity in the line maintenance principle is assessed

    應用列車-軌道空間耦合時變系統振動分析理論，分析了軌道三角坑對列車脫軌安全性的影響，並就現行鐵路線路維修規則中對軌道三角坑的限值進行了評估。
  6. Abstract : in this paper the effect of the track twist irregularity on the train derailment safety is analysed on the basis of dynamic analysis of train - tangent - track space - coupling time - varying system, and the limitation of the track twist irregularity in the line maintenance principle is assessed

    文摘:應用列車-軌道空間耦合時變系統振動分析理論，分析了軌道三角坑對列車脫軌安全性的影響，並就現行鐵路線路維修規則中對軌道三角坑的限值進行了評估。
  7. Stochastic space vibration analysis of train - curved bridge time - varying system

    橋梁時變系統空間振動隨機分析
  8. Identification of fir model and design variable for time - varying system

    模型辯識及設計變量
  9. There are lots of non - linear systems in the nature. because classical and morden control methods have common limitation : mathematical model of the plant has to be known in advance. but in fact many plants are intricate uncentaintied and time - varying. in addition, they also are non - linear. though there are methods of system identification in control theories, the identification theories and ways of non - linear and time - varying system are not mature and systematic. it is very difficult to carry out effective real - time control. the neural networks can approximate random non - linear relations and study by itself, and it provides new thoughts and new ways for solving these problems

    由於經典和現代控制方法存在一個共同的局限性：就是要求預先知道被控對象的數學模型，但實際上許多對象具有復雜的不確定性和時變性；此外還具有復雜的非線性。雖然在控制理論中有系統辨識的手段，但是對于非線性時變系統尚無成熟的和系統的辨識理論與方法，要實行有效的實時控制就很難了。人工神經元網路有表示任意非線性關系和自學習等能力，給解決這些問題提供了新思想和新方法。
  10. The research indicated that, if the secondary combustion chamber was looked on as a controlled object, with the adjusting valve as a input, the pressure and the temperature of a selected point on the inside wall of the combustion chamber as outputs, then such controlled system would be a strongly non - linear, time varying system with number of random disturbances, which resulted in huge difficulty to build an analyzed mathematics model for the spray burning of the liquid fuel, so that classic control methods were all invalid

    研究表明，若將rbcc發動機的二次燃燒室視為一個控制對象，同時以燃燒室內壁面取定點處的壓強、溫度和調節閥的開度為輸入輸出變量，則該系統將是輸入?輸出特性非線性很強、隨機干擾嚴重的復雜時變系統。這導致建立燃油噴霧燃燒具體模型的很大困難，從而宣告了經典控制方案的失效。
  11. A parameters following estimation for the time - varying system

    時變系統最小均方演算法的性能分析
  12. Identification of nonlinear time varying system using feedforward neural networks

    利用前饋神經網路的非線性時變系統的辯識
  13. Time - varying system identification methods and convergence theorems

    時變多變量系統多新息投影演算法的均方收斂性
  14. The response and excitation signals are first decomposedusing the daubechies wavelet scaling function. then the differential vibrationequations of the time - varying system are transformed into simple linear equationsbased on the orthogonality of the scaling functions. the physical parameters can beidentified directly by solving the linear equations

    運用daubechies小波對線性時變系統的激勵和該激勵作用下的響應做變換，將變換后的響應和激勵代入微分方程，利用daubechies小波尺度函數的正交性，將微分方程轉換成簡單的代數方程組，求解方程組，識別系統的時變參數。
  15. Using the cogent validity of backstepping " s solving parametric - strict - feedback nonlinear systems, xinghuo yu and wu yuqiang ( 1998 ) solved the output - tracking problem of a kind of linear time varying system by combining nonlinear damping method and variable structure scheme. in this dissertation, we sufficiently consider the effect of disturbances in the input channel basing on the same model

    Xinghuoyu和yuqiangwu （ 1998 ）針對一類線性時變系統的輸出跟蹤問題，基於back飛tepping設計機制，將帶有非線性dallpipg項的設計方法與變結構控制方法相結合，給出了一種新的非線性控制器設計方法
  16. Liquid - solid extrusion of composite material is a new kind of metal forming process, which has been developed in recent years with a promising practical application prospect for its simple working procedure, low cost and good workpiece performance. but it is difficult to set up an accurate mathematical model because the process is a multivariable nonlinear time varying system. so this process ca n ' t be put into practical uses for the difficulties in process parameters control

    復合材料管、棒材液-固擠壓成形工藝是近幾年發展起來的一種金屬成形新工藝，具有工序少、成本低、製件性能好等特點，應用前景廣闊，但該工藝是一多變量非線性時變系統，很難建立精確的數學模型，過程參數難于控制，限制了該工藝的實際應用。
  17. ( 2 ) wavelet networks are introduced to gpc. several nonlinear gpc algorithms based on wavelet networks are given : a nonlinear gpc base on predictive error compensation is designed, in which wavelet network is used to model the predictive error ; a new structure of multi - step predictive controller is constructed in which wavelet networks are used to identified the nonlinear directly ; a single - step predictive controller is given, in which a wavelet networks are used to estimate the parameters of the linear time - varying system. ; an a implicit gpc for nonlinear system is presented, in which wavelet networks are used to estimated the time - varying parameters of the generalized predictive controller

    （ 2 ）將小波網路與非線性廣義預測控制相結合，設計了多種基於小波網路的非線性廣義預測控制：考慮到建模誤差對多步預報的影響，引入小波網路估計預報誤差，對輸出預報進行修正，提高了控制性能且不影響系統的穩定性；利用小波網路構造多步預測器，設討了非線性系統多步預測控制演算法；利用小波網路逼近非線性系統廣義預測控制器的時變參數，設計了非線性系統隱式廣義預測控制器；利用小波網路辨識時變系統參數並直接用於構造控制器，設計了非線性系統單步預測控制演算法。
  18. The reference signal and the disturbance signal are controlled, which can achieve optimal effect in the meantime, applying adaptive lms algorithm based on variable step and variable region to variable frequency speed regulation system, the initial convergence rate, tricking ability of time - varying system and stable precision are best in the meantime

    利用變論域變步長的lms自適應濾波演算法，使自適應逆控制的異步電機變頻調速系統及其逆系統辨識的初始收斂速度、時變系統跟蹤能力及穩態精度3個指標同時達到最優。
  19. The results of simulation show that the soft sensor based on the proposed method has high precision and is suitable for time - varying system with samples which distribution is not uniform. 5

    工業數據模擬結果表浙江大學博士學位論文明，該方法在線建立的軟測量模型精度高，很適合慢時變對象、且訓練樣本分佈不均勻情況下的軟測量建模。
  20. In this paper, first we review the general methods of analysis of stability of large - scale systems, and in particular, we discuss scalar lyapunov approach and vector lyapunov approach by using linear time - varying system as example. then we present an introduction about partial decomposing approach of stability analysis by using linear time - varying system as an example. finally, in the main part of this paper, we consider the stability problem for linear, time - delay large - scale systems and nonlinear large - scale systems with strong coupling in single direction among subsystems

    又以線性時變大系統為例介紹了大系統穩定性分析的部分分解法，最後在本文的核心部分，研究了子系統間具有單向強耦合（前段子系統對後段子系統影響較大，但後段子系統對前段子系統影響較小或沒有影響）的線性時滯大系統和非線性大系統的穩定性問題，分別提出了時滯大系統穩定性和非線性大系統穩定性的部分分解法。
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