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Wyszukujesz frazę "linear control system" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-10 z 10
    Tytuł:
    Realizations of linear control systems on time scales
    Autorzy:
    Bartosiewicz, Z.
    Pawłuszewicz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/969999.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    time scale
    linear control system
    realization
    controllability
    observability
    Markov parameters
    Opis:
    Linear constant-coefficients control systems with output on arbitrary time scales are studied. Kalman criteria of controllability and observability are extended to such systems. The main problem is to find criteria for an abstract input/output map to have a realization as a system on the time scale. Two different characterizations of realizability are proved. They extend the classical results obtained for continuous-time and discrete-time systems. Minimal realizations and their uniqueness are also studied.
    Źródło:
    Control and Cybernetics; 2006, 35, 4; 769-786
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Guaranteed control policy with arbitrary set of correction points for linear-quadratic system with delay
    Autorzy:
    Chong, K. T.
    Kostyukova, O.
    Kurdina, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/969920.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    delayed system
    guaranteed optimal control policy
    approximative control policy
    Opis:
    For continuous, uncertain, linear quadratic control system with delayed input, we consider a min-max control policy in which the elements of feedback are present. The feedback is introduced into control optimization by allowing a control to be corrected at a given set of correction points from the control interval. This helps to overcome the feasibility difficulties that arise with standard min-max techniques. We show that construction of the optimal policy involves a sequence of min-max optimizations formulated as dynamic programs that do not yield simple analytical solutions. That is why the paper is mainly focused on construction and justification of suboptimal control policy that can be effectively implemented. Simulated examples demonstrate the proposed approach.
    Źródło:
    Control and Cybernetics; 2010, 39, 3; 739-768
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adaptive control for a jump linear system with quadratic cost
    Autorzy:
    Czornik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/970422.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    sterowanie adaptacyjne
    adaptive control
    jump linear systems
    linear quadratic problem
    Opis:
    The adaptive control problem for a jump linear system with quadratic cost functional on infinite time interval is solved in this paper. It is assumed that the coefficients of the state equation are unknown but a compact set that contains the parameters is known. A diminishing excitation accompanies the adaptive control signal, to ensure the strong consistency of the weighted least squares algorithm.
    Źródło:
    Control and Cybernetics; 2004, 33, 1; 51-69
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Error analysis of discrete approximations to bang-bang optimal control problems: the linear case
    Autorzy:
    Veliov, V. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/970563.pdf
    Data publikacji:
    2005
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    liniowy system sterowania
    aproksymacja dyskretna
    szacowanie błędów
    linear control systems
    discrete approximations
    error estimates
    Opis:
    The paper presents an error estimate for Runge-Kutta direct discretizations of terminal optimal control problems for linear systems. The optimal control for such problems is typically discontinuous, and Lipschitz stability of the solution with respect to perturbations does not necessarily hold. The estimate (in terms of the optimal controls) is of first order if certain recently obtained sufficient conditions for structural stability hold, and of fractional order, otherwise. The main tool in the proof is the established relation between the local convexity index of the reachable set and the multiplicity of zeros of appropriate switching functions associated with the problem.
    Źródło:
    Control and Cybernetics; 2005, 34, 3; 967-982
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dualities for linear control differential systems with infinite matrices
    Autorzy:
    Mozyrska, D.
    Bartosiewicz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/970007.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    infinite linear differential system
    row-finite infinite matrix
    approximate controllability
    observability
    Opis:
    Infinite-dimensional linear dynamic systems described by infinite matrices are studied. Approximate controllability for systems with lower-diagonal matrices is investigated, whereas observability is studied for systems with row-finite and upper-diagonal matrices. Different necessary or sufficient conditions of approximate controllability and observability of such systems are given. They are used to show dualities between these properties. The theorems on dualities extend the results known for finite-dimensional systems.
    Źródło:
    Control and Cybernetics; 2006, 35, 4; 887-904
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimality system POD and a-posteriori error analysis for linear-quadratic problems
    Autorzy:
    Volkwein, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/206100.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    optimal control
    model reduction
    proper orthogonal decomposition
    a-posteriori error estimates
    optimality system POD
    Opis:
    In this paper an abstract linear-quadratic optimal control problem governed by an evolution equation is considered. To solve this problem numerically a reduced-order approach based on proper orthogonal decomposition (POD) is applied. The error between the POD suboptimal control and the optimal control of the original problem is controlled by an a-posteriori error analysis. However, if the POD basis has bad approximation properties, a huge number of POD basis function is required to solve the reduced-order problem with the desired accuracy. To overcome this problem, optimality system POD (OS-POD) is utilized, where the POD basis is chosen with respect to the optimization criteria.
    Źródło:
    Control and Cybernetics; 2011, 40, 4; 1109-1124
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Persistent bounded disturbance rejection for uncertain time-delay systems
    Autorzy:
    Sun, M.
    Jia, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/969712.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    persistent disturbance
    time-delay system
    linear matrix inequality (LMI)
    robust control
    Opis:
    This paper considers the problem of persistent bounded disturbance rejection for a class of time-delay systems with parametric uncertainty by Lyapunov function and positively invariant set analysis method. Sufficient conditions for internal stability and L1-performance analysis are given in terms of linear matrix inequalities (LMIs). Based on the results, a simple approach to the design of a linear state-feedback controller is presented to stabilize robustly the uncertain time-delay systems and achieve a desired level of disturbance attenuation. All the obtained conditions are delay-dependent. A numerical example is included to illustrate the proposed method.
    Źródło:
    Control and Cybernetics; 2009, 38, 3; 593-607
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    State estimation of linear dynamic system with unknown input and uncertain observation using dynamic programming
    Autorzy:
    Janczak, D.
    Grishin, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/970019.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    sterowanie optymalne
    state estimation
    optimal control
    Bellman principle
    Opis:
    The paper is devoted to deriving a novel estimation algorithm for linear dynamic system with unknown inputs when observations contain outliers. The algorithm is derived for arbitrary input signals and does not require a priori statistical information concerning input signals. The filtering problem is considered as a control problem in which the unknown input is regarded as a controlling signal for system dynamics, which is described by Kalman equations. In this case, optimal control using Bellman dynamic programming can be calculated. The problem is complicated by the presence of outliers in the observations. To cope with this problem the Lainiotis' partitioning theorem has been used. The nonlinear algorithm of state estimation is obtained. Presented approach can be used both in control systems and decision procedures in tracking systems.
    Źródło:
    Control and Cybernetics; 2006, 35, 4; 851-862
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Controllability of a class of infinite dimensional systems with age structure
    Autorzy:
    Maity, Debayan
    Tucsnak, Marius
    Zuazua, Enrique
    Powiązania:
    https://bibliotekanauki.pl/articles/1839149.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    infinite dimensional linear system
    age structure
    admissible control operator
    null controllability
    population dynamics
    Opis:
    Given a linear dynamical system, we investigate the linear infinite dimensional system obtained by grafting an age structure. Such systems appear essentially in population dynamics with age structure when phenomena like spatial diffusion or transport are also taken into consideration. We first show that the new system preserves some of the wellposedness properties of the initial one. Our main result asserts that if the initial system is null controllable in a time small enough then the structured system is also null controllable in a time depending on the various involved parameters.
    Źródło:
    Control and Cybernetics; 2019, 48, 2; 231-260
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new method for analytic determination of extremum of the transients in linear systems
    Autorzy:
    Górecki, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/970346.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    równanie przestępne
    układ stacjonarny liniowy
    optymalizacja parametryczna
    formułka obliczeniowa
    wyróżnik funkcji wykładniczej
    wyznacznik Vandermondesa
    wzór Vietesa
    transcendental equations
    extremal dynamic error
    linear stationary system
    parametric optimization
    analytic formulae
    discriminants of exponential functions
    Vandermonde's determinant
    Viete's formulae
    process control
    Opis:
    The relation between extremal values of the error and the coefficients of its differential equations is one of the central problems of control systems in chemical industry, because extremal values of the error sometimes cause serious damages to the environment or to the system itself. Analytical formulae for the determination of these values are known only for the second-order systems. In this paper a method which permits to determine extremal values of the error in higher-order systems is proposed.
    Źródło:
    Control and Cybernetics; 2004, 33, 2; 275-295
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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