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    Wyświetlanie 1-8 z 8
    Tytuł:
    On fault tolerant control structures incorporating fault estimation
    Autorzy:
    Krokavec, D.
    Filasová, A.
    Liščinský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/229298.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    linear systems
    fault tolerant control
    fault estimation
    linear matrix inequalities
    H∞ norm
    H2/H∞ control strategy
    Opis:
    The paper provides the minimal necessary modifications of linear matrix inequality conditions for the mixed H2/H∞ control design as well as for the augmented observer-based fault estimation to be mutually compatible in joint design of integrated fault estimation and fault tolerant control. To be possible, within this integration, to design the controller which guarantees a pre-specified H∞ norm disturbance attenuation level, the design conditions has to be regularized using the H2 performance index and, moreover, augmented fault observer must be of enforced dynamics. Analyzing the ambit of performances given on the mixed H2/H∞ design, the joint design conditions are formulated as a minimization problem subject to convex constraints expressed by a system of LMIs. The feasibility of the conditions is demonstrated by a numerical example.
    Źródło:
    Archives of Control Sciences; 2016, 26, 4; 453-469
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pairwise control principle in large-scale systems
    Autorzy:
    Filasova, A.
    Krokavec, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/229965.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    decentralized control
    large-scale systems
    state feedback
    linear matrix inequality
    asymptotic stability
    Opis:
    The purpose of the paper is present an algorithm of partially decentralized control design for one type of large-scale linear dynamical system. The pairwise autonomous principle is preferred where design conditions are derived in the bounded real lemma form, and global system stability is reproven to formulate potential application principle in fault tolerant control. The validity of the proposed method is demonstrated by the numerical example.
    Źródło:
    Archives of Control Sciences; 2011, 21, 3; 227-242
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Delay-dependent dissipative control for stochastic singular systems with state delay
    Autorzy:
    Ding, C.
    Li, Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/229379.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    stochastic singular system
    dissipative control
    delay-dependent
    state delay
    linear matrix inequalities (LMIs)
    Opis:
    The problem of delay-dependent dissipative analysis and control for stochastic singular systems with state delay is investigated in this paper. Delay-dependent dissipative condition for the stochastic singular systems with state delay is obtained by employing singular stochastic Lyapunov and LMI-based methods. Based on this condition, a delay-dependent dissipative controller is presented. A numerical example is provided to demonstrate the effectiveness of the proposed approach.
    Źródło:
    Archives of Control Sciences; 2013, 23, 3; 281-293
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New observer-based control design for mismatched uncertain systems with time-delay
    Autorzy:
    Huynh, V. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/229302.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    observer-based control
    time-delay systems
    linear matrix inequality (LMI)
    mismatched uncertain systems
    Opis:
    In this paper, the state estimation problem for a class of mismatched uncertain time-delay systems is addressed. The estimation uses observer-based control techniques. The mismatched uncertain time-delay systems investigated in this study include mismatched parameter uncertainties in the state matrix and in the delayed state matrix. First, based on a new lemma with appropriately choosing Lyapunov functional, new results for stabilization of mismatched uncertain time-delay systems are provided on the basis of a linear matrix inequality (LMI) framework and the asymptotic convergence properties for the estimation error is ensured. Second, the control and observer gains are given from single LMI feasible solution which can overcome the drawback of the bilinear matrix inequalities approach often reported in the literature. Finally, a numerical example is used to demonstrate the efficacy of the proposed method.
    Źródło:
    Archives of Control Sciences; 2016, 26, 4; 597-610
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robust H∞ output feedback control of bidirectional inductive power transfer systems
    Autorzy:
    Swain, A.
    Almakhles, D.
    Neath, M. J.
    Nasiri, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/230097.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    inductive power transfer
    wireless power transfer
    robust control
    linear matrix inequalities
    sensitivity analysis
    Opis:
    Bidirectional Inductive power transfer (IPT) systems behave as high order resonant networks and hence are highly sensitive to changes in system parameters. Traditional PID controllers often fail to maintain satisfactory power regulation in the presence of parametric uncertainties. To overcome these problems, this paper proposes a robust controller which is designed using linear matrix inequality (LMI) techniques. The output sensitivity to parametric uncertainty is explored and a linear fractional transformation of the nominal model and its uncertainty is discussed to generate a standard configuration for μ-synthesis and LMI analysis. An H∞ controller is designed based on the structured singular value and LMI feasibility analysis with regard to uncertainties in the primary tuning capacitance, the primary and pickup inductors and the mutual inductance. Robust stability and robust performance of the system is studied through μ-synthesis and LMI feasibility analysis. Simulations and experiments are conducted to verify the power regulation performance of the proposed controller.
    Źródło:
    Archives of Control Sciences; 2017, 27, 1; 41-62
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    LMI based control design for linear systems with distributed time delays
    Autorzy:
    Filasova, A.
    Gontkovič, D.
    Krokavec, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/229820.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    linear matrix inequality
    systems with distributed time delays
    Lyapunov-Krasovskii functional
    state control
    asymptotic stability
    Opis:
    The paper concerns the problem of stabilization of continuous-time linear systems with distributed time delays. Using extended form of the Lyapunov-Krasovskii functional candidate, the controller design conditions are derived and formulated with respect to the incidence of structured matrix variables in the linear matrix inequality formulation. The result give sufficient condition for stabilization of the system with distributed time delays. It is illustrated with a numerical example to note reduced conservatism in the system structure.
    Źródło:
    Archives of Control Sciences; 2012, 22, 2; 217-231
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new D-stability area for linear discrete-time systems
    Autorzy:
    Krokavec, Dušan
    Filasová, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/229462.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    discrete-time linear systems
    state control
    pole placement onstraints
    D-stability region
    linear matrix inequalities
    polytopic uncertainties
    Opis:
    The paper addresses the problem of constrained pole placement in discrete-time linear systems. The design conditions are outlined in terms of linear matrix in equalities for the D-stable ellipse region in the complex Z plain. In addition, it is demonstrated that the D-stable circle region formulation is the special case of by this way formulated and solved pole placement problem. The proposed principle is enhanced for discrete-time linear systems with polytopic uncertainties.
    Źródło:
    Archives of Control Sciences; 2019, 29, 1; 5-23
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relaxed formulation of the design conditions for Takagi-Sugeno fuzzy virtual actuators
    Autorzy:
    Filasova, A.
    Krokavec, D.
    Liscinsky, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/229418.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nonlinear dynamic systems
    Takagi-Sugeno fuzzy models
    fault tolerant control
    static output controllers
    virtual actuators
    linear matrix inequalities
    Opis:
    The H∞ norm approach to virtual actuators design, intended to Takagi-Sugeno fuzzy continuous-time systems, is presented in the paper. Using the second Ljapunov method, the design conditions are formulated in terms of linear matrix inequalities in adapted bounded real lemma structures. Related to the static output controller, and for systems under influence of single actuator faults, the design steps are revealed for a three-tank system plant.
    Źródło:
    Archives of Control Sciences; 2016, 26, 2; 199-221
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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