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Wyszukujesz frazę "repetitive control" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Comparison of the Stability Boundary and the Frequency Response Stability Condition in Learning and Repetitive Control
    Autorzy:
    Songschon, S.
    Longman, R. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/908202.pdf
    Data publikacji:
    2003
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    automatyka
    robotyka
    iterative learning control
    repetitive control
    stability
    monotonic convergence
    Opis:
    In iterative learning control (ILC) and in repetitive control (RC) one is interested in convergence to zero tracking error as the repetitions of the command or the periods in the command progress. A condition based on steady state frequency response modeling is often used, but it does not represent the true stability boundary for convergence. In this paper we show how this useful condition differs from the true stability boundary in ILC and RC, and show that in applications of RC the distinction between these conditions is of no practical significance. In ILC satisfying this frequency condition is important for good learning transients, even though the true stability boundary is very different.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2003, 13, 2; 169-177
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    System Identification from Multiple-Trial Data Corrupted by Non-Repeating Periodic Disturbances
    Autorzy:
    Phan, M. Q.
    Longman, R. W.
    Lee, S. C.
    Lee, J. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/908209.pdf
    Data publikacji:
    2003
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    automatyka
    robotyka
    system identification
    disturbance identification
    iterative learning control
    repetitive control
    interaction matrix
    Opis:
    Iterative learning and repetitive control aim to eliminate the effect of unwanted disturbances over repeated trials or cycles. The disturbance-free system model, if known, can be used in a model-based iterative learning or repetitive control system to eliminate the unwanted disturbances. In the case of periodic disturbances, although the unknown disturbance frequencies may be the same from trial to trial, the disturbance amplitudes, phases, and biases do not necessarily repeat. Furthermore, the system may not return to the same initial state at the end of each trial before starting the next trial. In spite of these constraints, this paper shows how to identify the system disturbance-free dynamics from disturbance-corrupted input-output data collected over multiple trials without having to measure the disturbances directly. The system disturbance-free model can then be used to identify the disturbances as well, for use in learning or repetitive control. This paper represents the first extension of the interaction matrix approach to the multiple-trial environment of iterative learning control.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2003, 13, 2; 185-192
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variable-structure repetitive control for discrete-time linear systems with multiple-period exogenous signals
    Autorzy:
    Kurniawan, Edi
    Harno, Hendra G.
    Wijonarko, Sensus
    Widiyatmoko, Bambang
    Bayuwati, Dwi
    Purwowibowo, Purwowibowo
    Maftukhah, Tatik
    Powiązania:
    https://bibliotekanauki.pl/articles/330684.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    repetitive control
    variable structure control
    multiple period signal
    fast transient response
    sterowanie powtarzalne
    sterowanie o zmiennej strukturze
    odpowiedź przejściowa
    Opis:
    A new method to construct a discrete-time variable-structure repetitive controller for a class of linear systems perturbed by multiple-period exogenous signals is presented. The proposed control scheme combines the features of the discrete-time multiple-period repetitive control (MP-RC) and variable-structure control (VSC) techniques. The MP-RC part is assigned to simultaneously track and reject periodic signals consisting of multiple uncorrelated fundamental frequencies. The VSC part is then integrated to provide a fast transient response and robustness against plant parameter variations. Stability and robustness analyses are also elaborated to ensure that the resulting closed-loop system satisfies the desired control objectives. Moreover, it is shown through an example that the repetitive control system constructed using the proposed control method can effectively track a sinusoidal reference signal despite the presence of a multiple-period disturbance.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2020, 30, 2; 207-218
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A 2D system approach to the design of a robust modified repetitive-control system with a dynamic output-feedback controller
    Autorzy:
    Zhou, L.
    She, J.
    Zhou, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/330403.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    repetitive control
    dynamic output feedback
    two dimensional system
    singular value decomposition
    linear matrix inequality
    sterowanie powtarzalne
    sprzężenie zwrotne dynamiczne
    system dwuwymiarowy
    liniowa nierówność macierzowa
    Opis:
    This paper is concerned with the problem of designing a robust modified repetitive-control system with a dynamic output feedback controller for a class of strictly proper plants. Employing the continuous lifting technique, a continuous-discrete two-dimensional (2D) model is built that accurately describes the features of repetitive control. The 2D control input contains the direct sum of the effects of control and learning, which allows us to adjust control and learning preferentially. The singular-value decomposition of the output matrix and Lyapunov stability theory are used to derive an asymptotic stability condition based on a Linear Matrix Inequality (LMI). Two tuning parameters in the LMI manipulate the preferential adjustment of control and learning. A numerical example illustrates the tuning procedure and demonstrates the effectiveness of the method.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2014, 24, 2; 325-334
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robust aperiodic-disturbance rejection in an uncertain modified repetitive-control system
    Autorzy:
    Zhou, L.
    She, J.
    Li, C.
    Pan, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/330015.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    repetitive control
    equivalent input disturbance
    two dimensional system
    singular value decomposition
    linear matrix inequality
    sterowanie powtarzalne
    układ dwuwymiarowy
    rozkład na wartości szczególne
    liniowa nierówność macierzowa
    Opis:
    This paper concerns the problem of designing an EID-based robust output-feedback modified repetitive-control system (ROFMRCS) that provides satisfactory aperiodic-disturbance rejection performance for a class of plants with time-varying structured uncertainties. An equivalent-input-disturbance (EID) estimator is added to the ROFMRCS that estimates the influences of all types of disturbances and compensates them. A continuous-discrete two-dimensional model is built to describe the EID-based ROFMRCS that accurately presents the features of repetitive control, thereby enabling the control and learning actions to be preferentially adjusted. A robust stability condition for the closed-loop system is given in terms of a linear matrix inequality. It yields the parameters of the repetitive controller, the output-feedback controller, and the EID-estimator. Finally, a numerical example demonstrates the validity of the method.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2016, 26, 2; 285-295
    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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