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    Wyświetlanie 1-3 z 3
    Tytuł:
    Dynamical properties of a modified chaotic Colpitts oscillator with triangular wave non-linearity
    Autorzy:
    Suresh, Rasappan
    Sathish Kumar, Kumaravel
    Regan, Murugesan
    Niranjan Kumar, K. A.
    Narmada Devi, R.
    Obaid, Ahmed J.
    Powiązania:
    https://bibliotekanauki.pl/articles/27312004.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    chaos
    Colpitts oscillator
    Lyapunov exponent
    diffusion
    stability
    synchronization
    triangular wave non-linearity
    Opis:
    The purpose of this paper is to introduce a new chaotic oscillator. Although different chaotic systems have been formulated by earlier researchers, only a few chaotic systems exhibit chaotic behaviour. In this work, a new chaotic system with chaotic attractor is introduced for triangular wave non-linearity. It is worth noting that this striking phenomenon rarely occurs in respect of chaotic systems. The system proposed in this paper has been realized with numerical simulation. The results emanating from the numerical simulation indicate the feasibility of the proposed chaotic system. More over, chaos control, stability, diffusion and synchronization of such a system have been dealt with.
    Źródło:
    Archives of Control Sciences; 2023, 33, 1; 25--53
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quasi-optimal PZT distribution in active vibration reduction of the triangular plate with P-F-F boundary conditions
    Autorzy:
    Brański, A.
    Szela, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/229810.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    triangular plate
    PZT (piezoelectric zirconate titanate) actuator
    P-F-F (partial-free-free) boundary condition
    active vibration reduction
    Opis:
    An active reduction of transverse vibration of the triangular plate with P-F-F boundary conditions is considered. The cracked plate is idealized research model as partially clamped on one edge with varying clamped length. The active reduction is realised with PZTs. In the paper, assuming the detached base clamped length, the influence of PZTs distribution on the bending moment and the shearing force at the clamped edge is investigated. To realize the purpose two cases are considered. At the former the PZTs are attached at points in which the curvatures of the surface locally take their maximum (MC sub-areas or quasi-optimal ones). At the latter, the PZTs are somewhat shifted. The plate is excited with harmonic plane acoustic wave. The second mode is considered only. The active vibration reduction study with a finite element method (FEM) is carried out. The numerical calculations show that better results are obtained for MC distribution of the PZTs.
    Źródło:
    Archives of Control Sciences; 2010, 20, 2; 209-226
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heating control of a finite rod with a mobile source
    Autorzy:
    Jilavyan, Samvel H.
    Grigoryan, Edmon R.
    Khurshudyan, Asatur Zh.
    Powiązania:
    https://bibliotekanauki.pl/articles/1409386.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    null-controllability
    mobile control
    nonlinear constraints
    triangular wave
    rectangular wave
    Green’s function approach
    heuristic control
    lack of exact controllability
    Opis:
    The Green’s function approach is applied for studying the exact and approximate null-controllability of a finite rod in finite time by means of a source moving along the rod with controllable trajectory. The intensity of the source remains constant. Applying the recently developed Green’s function approach, the analysis of the exact null-controllability is reduced to an infinite system of nonlinear constraints with respect to the control function. A sufficient condition for the approximate null-controllability of the rod is obtained. Since the exact solution of the system of constraints is a long-standing open problem, some heuristic solutions are used instead. The efficiency of these solutions is shown on particular cases of approximate controllability.
    Źródło:
    Archives of Control Sciences; 2021, 31, 2; 417-430
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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