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    Wyświetlanie 1-5 z 5
    Tytuł:
    Stabilization of positive descriptor fractional discrete-time linear system with two different fractional orders by decentralized controller
    Autorzy:
    Sajewski, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/200198.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    positive
    fractional
    different order
    noncomensurate
    descriptor
    stabilization
    decentralized controller
    pozytywny
    deskryptor
    stabilizacja
    Opis:
    Positive descriptor fractional discrete-time linear systems with fractional different orders are addressed in the paper. The decomposition of the regular pencil is used to extend necessary and sufficient conditions for positivity of the descriptor fractional discrete-time linear system with different fractional orders. A method for finding the decentralized controller for the class of positive systems is proposed and its effectiveness is demonstrated on a numerical example.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 5; 709-714
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decentralized static output feedback controller design for linear interconnected systems
    Autorzy:
    Fadhilah, Helisyah Nur
    Adzkiya, Dieky
    Arif, Didik Khusnul
    Zhai, Guisheng
    Mardlijah
    Powiązania:
    https://bibliotekanauki.pl/articles/2201019.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    output feedback
    decentralized controller
    homotopy method
    interconnected system
    matrix inequality
    sprzężenie zwrotne
    kontroler zdecentralizowany
    metoda homotopii
    system połączony
    nierówność macierzowa
    Opis:
    Many interconnected systems in the real world, such as power systems and chemical processes, are often composed of subsystems. A decentralized controller is suitable for an interconnected system because of its more practical and accessible implementation. We use the homotopy method to compute a decentralized controller. Since the centralized controller constitutes the starting point for the method, its existence becomes very important. This paper introduces a non-singular matrix and a design parameter to generate a centralized controller. If the initial centralized controller fails, we can change the value of the design parameter to generate a new centralized controller. A sufficient condition for a decentralized controller is given as a bilinear matrix inequality with three matrix variables: a controller gain matrix and a pair of other matrix variables. Finally, we present numerical examples to validate the proposed decentralized controller design method.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2023, 33, 1; 83--96
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decentralized static output tracking control of interconnected and disturbed Takagi–Sugeno systems
    Autorzy:
    Jabri, Dalel
    Guelton, Kevin
    Belkhiat, Djamel E.C.
    Manamanni, Noureddine
    Powiązania:
    https://bibliotekanauki.pl/articles/331181.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    interconnected Takagi–Sugeno system
    decentralized static outputs tracking controller
    H∞ criterion
    LMIs
    model Takagi-Sugeno
    kontroler śledzenia
    Opis:
    This article describes a new procedure for the design of decentralized output-feedback tracking controllers for a class of interconnected Takagi–Sugeno (TS) fuzzy systems with external bounded disturbances and measurement noise. The main idea consists in transforming the decentralized tracking control problem, by using the descriptor redundancy formulation, to a robust decentralized stabilization one. The non-parallel distributed compensation (non-PDC) controllers proposed here are synthesized to satisfy robust H∞ tracking performance with disturbance attenuation. The decentralized controllers design conditions are given in terms of LMIs via extended quadratic Lyapunov functions. Finally, simulations are presented: two numerical examples are dedicated to compare the conservatism of the proposed approach regarding the previous results available in the literature; then, the effectiveness of the decentralized controller design methodology is illustrated with a closed-loop simulation of two inverted pendulums connected by a spring.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2020, 30, 2; 225-238
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decentralized structural control approach for Petri nets
    Autorzy:
    Aybar, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/969777.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    discrete event systems
    Petri nets
    decentralized control
    structural controller
    Opis:
    The structural controller, described by adding the control places to the Petri nets, is introduced in this work to lead the Petri net to the desired marking vectors. An algorithm (Algorithm I) is developed to determine the control places for the given Petri net. The connections and the initial marking of each control place are determined in this algorithm. Moreover, a decentralized structural control approach, based on overlapping decompositions, is introduced in this work. In this decentralized approach, all disjoint Petri subnets, which are obtained by using overlapping decompositions, are determined. The control places for each Petri subnet are determined by using the given algorithm. Then, the control places for the orginal Petri net are obtained by the control places of each PSN by another algorithm (Algorithm II) and these places are added to the orginal Petri net. Therefore, a decentralized structural controller which guarantees to lead the Petri net to the desired marking vectors is obtained.
    Źródło:
    Control and Cybernetics; 2007, 36, 1; 143-159
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of robust multi-loop PI controller for improved disturbance rejection with constraint on minimum singular value
    Autorzy:
    Arun, Pathiran
    Muniraj, Rathinam
    Boselin Prabhu, S.R.
    Jarin, T.
    Willjuice Iruthayarajan, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/27324013.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    multi-loop PI controller
    multivariable system
    decentralized control
    disturbance rejection
    robust stability
    Opis:
    Disturbance rejection performance optimization with constraints on robustness for a multivariable process is commonly encountered in industrial control applications. This paper presents the tuning of a multi-loop Proportional Integral (PI) controller method to enhance the performance of load disturbance rejection using evolutionary optimization. The proposed design methodology is formulated to minimize the load disturbance rejection response and the input control energy under the constraints of robust stability. The minimum singular value of multiplicative uncertainty is considered a multi-loop system robust stability indicator. Optimization is performed to achieve the same, or higher level than the most-explored Direct Synthesis (DS) based multi-loop PI controller, which is derived from a conventional criterion. Simulation analysis clearly proved that the proposed multi-loop PI controller tuning method gives better disturbance rejection, and either, the same or a higher level of robust stability when compared to the DS-based multi-loop PI controller.
    Źródło:
    Archives of Control Sciences; 2023, 33, 4; 839--859
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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