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Browsing by Subject "systemy dynamiczne"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Computers methods for chaos diagnostic
    (Wydawnictwa AGH, 2011) Obrączka, Anna
    In the paper the computers methods for chaos diagnostic in dynamical systems was described. Usually they are based on the analysis of value or behaviour of some coefficient. Among discussed properties are for example: autocorrelation, density of invariant measure or Lyapunov exponent. Its good to see that most of presented methods are based on numerical calculations, so it can be treat as good suggestion of system's behaviour, but not as mathematical proof of chaos existence.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Stabilność aperiodyczna układu regulacji z przedziałowym obiektem II rzędu i regulatorem PID
    (Wydawnictwa AGH, 2010) Oprzędkiewicz, Krzysztof
    In a paper a problem of calculation aperiodic stability areas inside area of permissible controller's parameters for closed - loop control system is presented. As a controller the ideal PID controller was assumed, as a control plant the second order interval object was considered. Inside the area of interval parameters a spectrum of the plant can be both real and complex. To the analysis of aperiodic stability the sufficient aperiodic stability condition for interval polynomials was applied. Theoretical results were with a numerical example depicted.