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    Wyświetlanie 1-6 z 6
    Tytuł:
    Phase portraits of planar control-affine systems
    Autorzy:
    Jakubczyk, B.
    Respondek, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/970556.pdf
    Data publikacji:
    2005
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    system sterowania
    niezmiennik
    trajektoria krytyczna
    bifurkacja
    control system
    family of control systems
    invariants
    phase portrait
    critical trajectories
    feedback equivalence
    bifurcation
    Opis:
    We study nonlinear control systems in the plane, affine with respect to control. We introduce two sets of feedback equivariants forming a phase portrait PP and a parameterized phase portrait PPP of the system. The phase portrait PP consists of an equilibrium set E, a critical set C (parameterized, for PPP), an optimality index, a canonical foliation and a drift direction. We show that under weak generic assumptions the phase portraits determine, locally, the feedback and orbital feedback equivalence class of a system. The basic role is played by the critical set C and the critical vector field on C. We also study local classification problems for systems and their families.
    Źródło:
    Control and Cybernetics; 2005, 34, 3; 819-847
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A sufficient condition for small-time local attainability of a set
    Autorzy:
    Krastanov, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/205840.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    nieliniowy system sterowania
    nonlinear control systems
    small-time local attainability of a set
    Opis:
    The notion of small-time local attainability (STLA) of a closed set with respect to a nonlinear control system is discussed and a new sufficient STLA condition is proved.
    Źródło:
    Control and Cybernetics; 2002, 31, 3; 739-750
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hourly identification and simulation of the TGE S.A. Day-Ahead Market system
    Autorzy:
    Marlęga, Radosław
    Tchórzewski, Jerzy R.
    Powiązania:
    https://bibliotekanauki.pl/articles/31342745.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    equations of state
    control system
    Day-Ahead Market
    identification
    Polish Electricity Exchange
    simulation
    state space
    Opis:
    The paper presents selected research results concerning the identification and simulation of the TGE S.A. Day-Ahead Market (DAM) system of the day for electricity delivered and sold, listed for the following hours: 5:01-6:00, 11:01-12:00, 17:01-18:00 and 23:01-24:00 in 2019, which were obtained in the MATLAB and Simulink environment using the System Identification Toolbox. As a result of identification, four respective discrete parametric arx models were obtained, which were then subject to quality assessment. Then, a simulation model was built in the Simulink environment, which was used for simulation tests and for assessing the sensitivity of the model created using the data from 2019 as the basis and the data from 2020 for verification. The obtained results confirm the correctness of both the performed discrete parametric identification and the possibility of testing the quality of the model and its sensitivity with the use of the DAM system model in the MATLAB and Simulink environment.
    Źródło:
    Control and Cybernetics; 2022, 51, 4; 523-555
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Control and optimization of abstract continuous time evolution inclusions
    Autorzy:
    Mokhtar-Kharroubi, Hocine
    Powiązania:
    https://bibliotekanauki.pl/articles/31342761.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    evolution inclusion
    well-posedness
    optimal control
    strong duality
    system of optimality
    Fenchel duality
    convex process of evolution
    integrodifferential inclusions
    Opis:
    Abstract controlled evolution inclusions are revisited in the Banach spaces setting. The existence of solution is established for each selected control. Then, the input–output (or, control-states) multimap is examined and the Lipschitz continuous well posedness is derived. The optimal control of such inclusions handled in terms of a Bolza problem is investigated by means of the so-called PF format of optimization. A strong duality is provided, the existence of an optimal pair is given and the system of optimalty is derived. A Fenchel duality is built and applied to optimal control of convex process of evolution. Finally, it will be shown how the general theory we provided can be applied to a wide class of controled integrodifferental inclusions.
    Źródło:
    Control and Cybernetics; 2023, 52, 1; 5-34
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stabilization of a fluid structure interaction with nonlinear damping
    Autorzy:
    Lasiecka, I.
    Lu, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/206598.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    fluid structure interaction
    interface
    Navier-Stokes equation
    system of elasticity
    feedback boundary control
    strong stability
    uniform stability
    optimal control
    passive damping
    active damping
    dynamic and static damping
    Opis:
    Asymptotic stability of finite energy solutions to a fluid-structure interaction with a static interface in a bounded domain Ω ∈ Rn, n = 2 is considered. It is shown that the undamped model subject to ”partial flatness” geometric condition on the in- terface produces solutions whose energy converges strongly to zero; while with a stress type feedback control applied on the interface of the structure, the model produces solutions whose energy is exponentially stable. An addition of a static damping on the interface produces solutions whose full norm in the phase space is exponentially stable. Without a static damping an interesting phenomenon occurs that steady state solutions (equilibria) might generate genuinely growing in time solutions. This is purely nonlinear phenomenon captured by newly developed techniques amenable to handle instability of steady state solutions arising from nonlinearity.
    Źródło:
    Control and Cybernetics; 2013, 42, 1; 155-181
    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 1-6 z 6

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