Materiały konferencyjne, referaty (WM)

Stały URI dla kolekcjihttp://hdl.handle.net/11652/163

Przeglądaj

Filtry

20212

Ustawienia

Autorsearch.filters.applied.operator.equals: search.filters.author.Bednarek, MaksymilianData rozpoczęcia: 2000

collection.search.results.head

Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Magnetic oscillator under excitation with controlled initial phase
    (Wydawnictwo Politechniki Łódzkiej, 2021) Polczyński, Krystian; Bednarek, Maksymilian; Awrejcewicz, Jan
    The work contains the results of numerical simulations of the dynamics of a magnetic pendulum system subjected to excitation with a varying initial phase. A magnetic pendulum consists of a magnet fixed to the end of its arm and an electric coil below it. The initial phase of the excitation is presented as a linear function of the dynamic variable of the system, which is the angular position of the pendulum. The obtained basins of attraction indicate the occurrence of multi-periodic solutions in the system depending on the changes in the parameters of this system. The periodicities of the observed solutions are quantified mostly by odd numbers.
  • Pozycja
    Energy flow control in a system of coupled pendulums using magnetic field
    (Wydawnictwo Politechniki Łódzkiej, 2021) Pilipchuk, Valery; Polczyński, Krystian; Bednarek, Maksymilian; Awrejcewicz, Jan
    In the presented work, we proposed a methodology of controlling the resonance energy exchange in mechanical systems by creating appropriate electromagnetic fields around the system’s structural subcomponents. It has been shown theoretically and confirmed experimentally that properly guided magnetic fields can effectively change mechanical potentials in such a way that the energy flow between the oscillators takes the desired direction. In particular, a model of two weakly coupled pendulums subjected to an electromagnetic load using a specific set of descriptive functions was considered. The developed control strategies are based on the observation that, in the case of antiphase oscillation, the energy is moving from the pendulum, which is in the repelling magnetic field, to the oscillator not subjected to magnetic field. The advantage of the suggested control strategy is that the temporal rate of inputs is dictated by the speed of beating, which is relatively slow compared to the carrying oscillations.