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    Wyświetlanie 1-3 z 3
    Tytuł:
    The Problems of Transition Predicates Construction in Hierarchical Concurrent Controllers
    Autorzy:
    Łabiak, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/226340.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    binary control system
    statechart diagrams
    hierarchy;concurrency
    conflicting transitions
    Boolean predicates
    computational complexity
    compatibility classes
    clique problem
    Opis:
    The paper presents a problem of a transition predicates construction in hierarchical concurrent state oriented notation. The notation, called statechart diagrams or state machine, serves as a very convenient formalism for specification of a complex behavior of the embedded systems control unit. The controller specified in this way is discrete, deterministic and synchronous system which operates on binary values and can be implemented in programmable devices as a digital circuit. Well designed controller has conflict-free transitions and its concurrent transitions should be independent. In order to meet this requirements transition predicates must be pairwise both orthogonal and non-implicative. Computational complexities of the problems is equal to classic clique problem. The paper also suggests some statecharts syntactic structures solving these problems.
    Źródło:
    International Journal of Electronics and Telecommunications; 2012, 58, 4; 411-418
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Terminal control problem for processes represented by nonlinear multi parameter binary dynamic system
    Autorzy:
    Haci, Y. H.
    Ozen, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/969692.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    Boolean function
    difference equation
    piecewise curve
    Opis:
    In this paper, nonlinear multi parameter binary difference equation system (MPBDS) and optimal piecewise process are analyzed. Since such difference equation system is over-determined, a theorem similar to Frobenius's theorem is proved on Galois field. An illustrative example, which can be solved by applying terminal control problem is given. Then, terminal control problem is examined and it is shown that the principle of optimality is satisfied.
    Źródło:
    Control and Cybernetics; 2009, 38, 3; 625-633
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Original System for Controlling the Speed of Movement of Pneumatic Drives in Rehabilitation Devices
    Autorzy:
    Żyłka, Marta
    Żyłka, Wojciech
    Szczerba, Zygmunt
    Biskup, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2201856.pdf
    Data publikacji:
    2023
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    pneumatic drive
    control of concurrent stroke control
    binary control
    pneumatic actuators
    double-acting pneumatic actuators
    pneumatic drive speed control
    Opis:
    The aim of the article is to present an original method of speed control and simultaneous stroke of the piston rods of two pneumatic cylinders using potentiometric position transducers, pneumatic solenoid valves, properly scaled throttle-check valves, solenoid valves and a microcontroller with power modules for solenoid valves. Initial experimental studies of the control system for simultaneous displacement of two piston rods of pneumatic actuators were carried out. The purpose of the research was to obtain the characteristics of the displacement of the extension of two pneumatic drives. The obtained results were analyzed. The results of the measurements confirmed the possibility of applying the presented control to rehabilitation devices for passive exercises of the lower extremities. The advantage of the proposed control system is its reaction speed, which is a response to changes in operating conditions of a given actuator, such as: external disturbances, own resistance of the controlled device, frictional resistance or movement caused by the patient exercising on the rehabilitation device moved by these actuators.
    Źródło:
    Advances in Science and Technology. Research Journal; 2023, 17, 1; 124--132
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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