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    Wyświetlanie 1-8 z 8
    Tytuł:
    Design of three control algorithms for an averaging tank with variable filling
    Autorzy:
    Kolankowski, Michał
    Piotrowski, Robert
    Powiązania:
    https://bibliotekanauki.pl/articles/2105996.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    control system
    fuzzy control system
    integral control system
    LQR
    mathematical model
    PID control system
    state feedback controller
    tank with variable filling
    Opis:
    An averaging tank with variable filling is a nonlinear multidimensional system and can thus be considered a complex control system. General control objectives of such object include ensuring stability, zero steady-state error, and achieving simultaneously shortest possible settling time and minimal overshoot. The main purpose of this research work was the modeling and synthesis of three control systems for an averaging tank. In order to achieve the intended purpose, in the first step, a mathematical model of the control system was derived. The model was adapted to the form required to design two out of three planned control systems by linearization and reduction of its dimensions, resulting in two system variants. A multivariable proportional-integral-derivative (PID) control system for the averaging tank was developed using optimization for tuning PID controllers. State feedback and output feedback with an integral action control system for the considered control system was designed using a linear-quadratic regulator (LQR) and optimization of weights. A fuzzy control system was designed using the Mamdani inference system. The developed control systems were tested using theMATLAB environment. Finally, the simulation results for each control algorithm (and their variants) were compared and their performance was assessed, as well as the effects of optimization in the case of PID and integral control (IC) systems.
    Źródło:
    Acta Mechanica et Automatica; 2022, 16, 2; 136--150
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the robustness of the integrable trajectories of the control systems with limited control resources
    Autorzy:
    Huseyin, Nesir
    Huseyin, Anar
    Guseinov, Khalik G.
    Powiązania:
    https://bibliotekanauki.pl/articles/27321481.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    nonlinear control system
    integral equation
    integral constraint
    integrable trajectory
    robustness
    Opis:
    The control system described by Urysohn type integral equation is considered where the system is nonlinear with respect to the phase vector and is affine with respect to the control vector. The control functions are chosen from the closed ball of the space Lq(Ω; ℝm), q > 1, with radius r and centered at the origin. The trajectory of the system is defined as p-integrable multivariable function from the space Lp(Ω; ℝn), (1/q) + (1/p) = 1, satisfying the system’s equation almost everywhere. It is shown that the system’s trajectories are robust with respect to the fast consumption of the remaining control resource. Applying this result it is proved that every trajectory can be approximated by the trajectory obtained by full consumption of the total control resource.
    Źródło:
    Archives of Control Sciences; 2023, 33, 3; 527--537
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Filtered integral sliding mode control in a two-mass drive system
    Autorzy:
    Dróżdż, P.
    Szabat, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193310.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    filtered integral sliding mode control
    integral sliding mode control
    two-mass system
    chattering alleviation
    Opis:
    The paper presents issues related to the application of filtered integral sliding mode control to a two-mass drive system. A classical control structure has been presented and its design procedure is shown in detail. The properties of the classical structure, in which the chattering phenomenon seems to be a big drawback, have been summarized. In order to eliminate this phenomenon, an output low-pass filter has been proposed and the performance of this system has been tested. In order to improve its characteristics, an adaptive low-pass filter has been proposed. The bandwidth of the filter was changed on-line by the fuzzy system according to the current state of the plant. During the steady-states, the bandwidth is low to eliminate chattering effect, and during transients higher in order to ensure the fast dynamics of the plant.
    Źródło:
    Power Electronics and Drives; 2017, 2, 37/1; 121-134
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Gram-Schmidt Method in the Identification of a Generalized Control System
    Autorzy:
    Wysocki, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/911169.pdf
    Data publikacji:
    2000
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    rachunek operatorowy
    pochodna
    system sterowania
    operational calculus
    derivative
    integral
    limit condition
    control system
    identification
    orthonormalization method
    Opis:
    This article discusses the identification of a generalized linear control system described in the Bittner operational calculus by an abstract linear differential equation with constant coefficients. The identification problem leads to that of the best approximation in the vector space l_m^2 and is solved by using the Gram-Schmidt orthonormalization method. The classical Strejc method and the Shinbrot modulating function method are generalized here.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2000, 10, 2; 245-271
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Observer-based leader-following formation control of uncertain multiple agents by integral sliding mode
    Autorzy:
    Qian, D. W.
    Tong, S. W.
    Li, C. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/201511.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    multi-agent system
    formation control
    integral sliding mode control
    uncertainty
    nonlinear disturbance observer
    stability
    system wieloagentowy
    kontrola formacji
    integralne sterowanie ślizgowe
    niepewność
    nieliniowy obserwator zakłóceń
    stabilność
    Opis:
    This paper investigates the formation control problem of multiple agents. The formation control is founded on leader-following approaches. The method of integral sliding mode control is adopted to achieve formation maneuvers of the agents based on the concept of graph theory. Since the agents are subject to uncertainties, the uncertainties also challenge the formation-control design. Under a mild assumption that the uncertainties have an unknown bound, the technique of nonlinear disturbance observer is utilized to tackle the issue. According to a given communication topology, formation stability conditions are investigated by the observer-based integral sliding mode formation control. From the perspective of Lyapunov, not only is the formation stability guaranteed, but the desired formation of the agents is also realized. Finally, some simulation results are presented to show the feasibility and validity of the proposed control scheme through a multi-agent platform.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 1; 35-44
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robust flat filtering control of a two degrees of freedom helicopter subject to tail rotor disturbances
    Autorzy:
    Sánchez-Meza, Victor-Gabriel
    Lozano-Hernández, Yair
    Gutiérrez-Frías, Octavio
    Lozada-Castillo, Norma
    Luviano-Juárez, Alberto
    Powiązania:
    https://bibliotekanauki.pl/articles/24200696.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    flat filtering control
    generalized proportional integral control
    nonlinear system
    tail rotor disturbance
    two degrees of freedom helicopter
    sterowanie całkujące
    układ nieliniowy
    zakłócenia wirnika
    Opis:
    This article deals with modelling and a flatness-based robust trajectory tracking scheme for a two degrees of freedom helicopter, which is subject to four types of tail rotor disturbances to validate the control scheme robustness. A mathematical model of the system, its differential flatness and a differential parametrization are obtained. The flat filtering control is designed for the system control with a partially known model, assuming the non-modelled dynamics and the external disturbances (specially the tail rotor ones) to be rejected by means of an extended state model (ultra-local model). Numerical and experimental assessments are carried out on a characterized prototype whose yaw angle (ψ), given by the z axis, is in free form, while the pitch angle (θ), which results from rotation about the y axis, is mechanically restricted. The proposed controller performance is tested through a set of experiments in trajectory tracking tasks with different disturbances in the tail rotor, showing robust behaviour for the different disturbances. Besides, a comparison study against a widely used controller of LQR type is carried out, in which the proposed controller achieves better results, as illustrated by a performance index.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2023, 33, 4; 521--535
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    LMI-based adaptive fuzzy integral sliding mode control of mismatched uncertain systems
    Autorzy:
    Mnasri, C.
    Gasmi, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/930163.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    sterowanie rozmyte
    sterowanie ślizgowe
    liniowa nierówność macierzowa
    system niepewny
    adaptive fuzzy control
    integral sliding mode
    LMI
    mismatched uncertainties
    Opis:
    Integral sliding mode design is considered for a class of uncertain systems in the presence of mismatched uncertainties in both state and input matrices, as well as norm-bounded nonlinearities and external disturbances. A sufficient condition for the robust stability of the sliding manifold is derived by means of linear matrix inequalities. The initial existence of the sliding mode is guaranteed by the proposed control law. The improvement of the proposed control scheme performances, such as chattering elimination and estimation of norm bounds of uncertainties, is then considered with the application of an adaptive fuzzy integral sliding mode control law. The validity and efficiency of the proposed approaches are investigated through a sixth order uncertain mechanical system.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2011, 21, 4; 605-615
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metody strojenia regulatorów typu PID z wykorzystaniem technologii syntezy regulatorów od stanu
    PID-type regulators tuning by using state-feedback control design
    Autorzy:
    Czyżniewski, Mateusz
    Łangowski, Rafał
    Zubowicz, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/266921.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
    Tematy:
    LQR
    regulator liniowo-kwadratowy
    PID
    regulator proporcjonalno-całkująco-różniczkujący
    strojenie regulatora PID
    linear quadratic regulator
    proportional-integral-derivative controller
    PID controller tuning
    control system
    Opis:
    Układy sterujące typu PID są jednymi z najbardziej popularnych regulatorów wykorzystywanych w układach regulacji. W związku z tym znanych jest szereg metod doboru wartości ich parametrów (nastaw). Obok różnych metod inżynierskich czy analitycznych strojenia tego typu regulatorów, dostępne są również podejścia bazujące na optymalizacji. Wskaźnikiem jakości znajdującym w nich zastosowanie jest np. całka z kwadratu uchybu. W artykule przedstawiono alternatywny sposób wyznaczania nastaw regulatora z rodziny PID bazujący na rozwiązaniu liniowokwadratowego zadania optymalizacji wykorzystującego kryterium energetyczne. Uszczegóławiając, pokazano możliwość transformacji optymalnych nastaw regulatora bazującego na sprzężeniu zwrotnym od stanu obiektu w nastawy regulatora w klasycznym układzie regulacji. Jako aplikację wykorzystano nieliniowy matematyczny model dynamiki podwójnego odwróconego wahadła.
    The PID-type regulators are one of the most commonly used in control systems. Therefore, there are many different methods of selecting values of their parameters. Apart from various engineering or analytical methods of tuning such controllers, there are also approaches based on optimisation. In the latter case, a typical performance index is integral square error (ISE). In this paper, an alternative method of PID parameters tuning has been presented. This approach is based on a solution of the linear-square optimisation task with energy-based performance index. In the result, a state-feedback controller is obtained. Subsequently, the state-feedback gains are translated into PID regulator parameters. The proposed approach has been illustrated using a non-linear mathematical model of a double inverted pendulum.
    Źródło:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2019, 68; 9-12
    1425-5766
    2353-1290
    Pojawia się w:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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