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Wyszukujesz frazę "control performance" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Gain scheduled controller design for thermo-optical plant
    Autorzy:
    Veselý, V
    Osuský, J
    Sekaj, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/229643.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gain scheduled control
    small gain theorem
    frequency domain
    genetic algorithm
    control performance
    Opis:
    This paper presents a gain scheduled controller design for MIMO and SISO systems in the frequency domain using the genetic algorithms approach. The proposed method is derived from the M-delta structure of closed loop MIMO (SISO) systems and the small gain theory is exploited to obtain the stability condition. An example of real system illustrates the effectiveness of the proposed output feedback gain scheduled controller design method and also the possibility to improve its performance using the genetic algorithm.
    Źródło:
    Archives of Control Sciences; 2014, 24, 3; 333-349
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model-free reconfiguration mechanism for fault tolerance
    Autorzy:
    Jain, T.
    Yamé, J. J.
    Sauter, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/331372.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    sterowanie tolerujące uszkodzenia
    sterowanie ślizgowe
    fault tolerant control
    control performance
    behavioral theory
    switching control
    Opis:
    The problem of fault tolerant control is studied from the behavioral point of view. In this mathematical framework, the concept of interconnection among the variables describing the system is a key point. The problem is that the behavior we intend to control is not known. Therefore, we are interested in designing a fault accommodation scheme for an unknown behavior through an appropriate behavioral interconnection. Here we deal simply with the trajectories that are generated by the system in real time. These trajectories determine the behavior of a system in various (faulty/healthy) modes. Based on the desired interconnected behavior, only the trajectories that obey certain laws are selected. These laws, representing the desired behavior, can indeed be achieved by a regular interconnection. Thus, when the trajectories do not belong to a certain desired behavior, it is considered to be due to the occurrence of a fault in the system. The vantage point is that the fault tolerant control problem now becomes completely a model-free scheme. Moreover, no explicit fault diagnosis module is required in our approach. The proposed fault tolerance mechanism is illustrated on an aircraft during the landing phase.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2012, 22, 1; 125-137
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of a nonlinear tuned mass damper by using the multi-scale method
    Autorzy:
    Liu, Junfeng
    Yao, Ji
    Huang, Kun
    Zhang, Qing
    Ze, Li
    Powiązania:
    https://bibliotekanauki.pl/articles/2104766.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    nonlinear characteristics
    complex average method
    multi-scale method
    nonlinear design
    control performance
    Opis:
    A tuned mass damper is a kind of vibration damping device which has been widely used in tall buildings, machinery, bridges, aerospace engineering and other fields. In practical engineering applications, due to large deformation caused by large displacement, errors in engineering constructions and the existence of limit devices, the structure and tuned mass dampers inevitably produce some nonlinear characteristics, but these nonlinearities are often ignored. The results of this study confirm that the nonlinearity of the structure and the mass damper should be considered in the process of optimal frequency design, otherwise there will be a large deviation between the design optimal frequency of the mass damper and the actual optimal frequency. In this paper, nonlinear characteristics of the tuned mass damper and the main structure are considered. The first-order differential equations are obtained by using the complex average method, and the nonlinear equations of the tuned mass damper system are derived by using the multi-scale method. On this basis, the parameters are determined. The numerical results show that the error of the approximate solution method is small in the given example. The nonlinear tuned mass damper with nonlinear design exhibits a better control performance.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2022, 60, 3; 463--477
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Linear Control Methods for an AMB System
    Autorzy:
    Grega, W.
    Piłat, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/911127.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    aktywne łożysko magnetyczne
    sterowanie w czasie rzeczywistym
    sterowanie liniowe
    jakość regulacji
    active magnetic bearing
    real-time control
    modelling
    LQ control
    control performance
    Opis:
    The contactless nature of active magnetic bearings brings about many advantages over the conventional bearing while industrial real-time applications are often limited by the significant complexity of control algorithms. This paper presents the application of an LQ controller to an active magnetic bearing system (AMB). Two control strategies are presented and compared: local and global. In the first case the rotor is modelled as two separated masses located at the bearing. In the second case rotor stabilization is considered globally as a problem of the rotating rigid body suspended in a magnetic field. The second approach is especially important for high-speed rotating machines. The control performance of both algorithms was analysed using an experimental AMB laboratory system.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2005, 15, 2; 245-255
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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