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    Wyświetlanie 1-5 z 5
    Tytuł:
    Uniform exponential stabilization of distributed bilinear parabolic time delay systems with bounded feedback control
    Autorzy:
    Tsouli, Azzeddine
    Ouarit, Mostafa
    Powiązania:
    https://bibliotekanauki.pl/articles/2134886.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    time delay
    uniform exponential stabilization
    bilinear parabolic systems
    bounded feedback control
    Opis:
    In this paper we deal with the problem of uniform exponential stabilization for a class of distributed bilinear parabolic systems with time delay in a Hilbert space by means of a bounded feedback control. The uniform exponential stabilization problem of such a system reduces to stabilizing only its projection on a suitable finite dimensional subspace. Furthermore, the stabilizing feedback control depends only on the state projection on the finite dimensional subspace. An explicit decay rate estimate of the stabilized state is given provided that a non-standard weaker observability condition is satisfied. Illustrative examples for partial functional differential equations are displayed.
    Źródło:
    Archives of Control Sciences; 2022, 32, 2; 257--278
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On The Stability of Neutral-type Uncertain Systems With Multiple Time Delays
    Autorzy:
    Liu, P. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/911133.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    twierdzenie Razumikhina
    opóźnienie czasowe
    układ niepewny
    Razumikhin-type theorem,
    time delay
    neutral type uncertain systems
    Opis:
    The problems of both single and multiple delays for neutral-type uncertain systems are considered. First, for single neutral time delay systems, based on a Razumikhin-type theorem, some delay-dependent stability criteria are derived in terms of the Lyapunov equation for various classes of model transformation and decomposition techniques. Second, robust control for neutral systems with multiple time delays is considered. Finally, we demonstrate numerical examples to illustrate the effectiveness of the proposed approaches. Compared with results existing in the literature, our methods are shown to be superior to them.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2005, 15, 2; 221-229
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Time-varying time-delay estimation for nonlinear systems using neural networks
    Autorzy:
    Tan, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/907277.pdf
    Data publikacji:
    2004
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    modelowanie procesu
    opóźnienie czasowe
    układ nieliniowy
    sieć neuronowa
    modelling
    time delay
    nonlinear systems
    neural networks
    estimation
    Opis:
    Nonlinear dynamic processes with time-varying time delays can often be encountered in industry. Time-delay estimation for nonlinear dynamic systems with time-varying time delays is an important issue for system identification. In order to estimate the dynamics of a process, a dynamic neural network with an external recurrent structure is applied in the modeling procedure. In the case where a delay is time varying, a useful way is to develop on-line time-delay estimation mechanisms to track the time-delay variation. In this paper, two schemes called direct and indirect time-delay estimators are proposed. The indirect time-delay estimator considers the procedure of time-delay estimation as a nonlinear programming problem. On the other hand, the direct time-delay estimation scheme applies a neural network to construct a time-delay estimator to track the time-varying time-delay. Finally, a numerical example is considered for testing the proposed methods.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2004, 14, 1; 63-68
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of decoupled pi controllers for two-input two-output networked control systems with intrinsic and network-induced time delays
    Autorzy:
    Mohamed-Vall, Ould Mohamed
    Powiązania:
    https://bibliotekanauki.pl/articles/2106237.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    proportional integral controller
    two-input two-output systems
    TITO
    networked control systems
    stability region boundary locus
    Wood–Berry distillation column model
    time delay
    Mikhailov criterion
    Opis:
    Proportional integral controller design for two-input two-output (TITO) networked control systems (NCSs) with intrinsic and network-induced time delays is studied in this paper. The TITO NCS consists of two delayed sub-systems coupled in a 1-1/2-2 pairing mode. In order to simplify the controller design, a decoupling method is first applied to obtain a decoupled system. Then, the controllers are designed based on the transfer function matrix of the obtained decoupled system and using the boundary locus method for determining the stability region and the well-known Mikhailov criterion for the stability test. A comparative analysis of the designed controllers and other controllers proposed in previous literature works is thereafter carried out. To demonstrate the validity and efficacy of the proposed method and to show that it achieves better results than other methods proposed in earlier literature works, the implementation in simulation of Wood–Berry distillation column model (methanol–water separation), a well-known benchmark for TITO systems, is carried out.
    Źródło:
    Acta Mechanica et Automatica; 2021, 15, 4; 201--208
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fault tolerant control of switched nonlinear systems with time delay under asynchronous switching
    Autorzy:
    Xiang, Z.
    Wang, R.
    Chen, Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/929592.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    opóźnienie czasowe
    sterowanie tolerujące uszkodzenia
    układ komutowany
    układ nieliniowy
    time delay
    fault tolerant control
    switched nonlinear systems
    asynchronous switching
    Opis:
    This paper investigates the problem of fault tolerant control of a class of uncertain switched nonlinear systems with time delay under asynchronous switching. The systems under consideration suffer from delayed switchings of the controller. First, a fault tolerant controller is proposed to guarantee exponentially stability of the switched systems with time delay. The dwell time approach is utilized for stability analysis and controller design. Then the proposed approach is extended to take into account switched time delay systems with Lipschitz nonlinearities and structured uncertainties. Finally, a numerical example is given to illustrate the effectiveness of the proposed method.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2010, 20, 3; 497-506
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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