Dynamics and energy harvesting from parametrically coupled self-excited electromechanical oscillator

Nonlinear Dynamics, Journal Year: 2024, Volume and Issue: 112(14), P. 11785 - 11802

Published: May 15, 2024

Abstract The investigated parametrically coupled electromechanical structure is composed of a mechanical Duffing oscillator whose mass sits on moving belt surface. driving electrical network van der Pol aim to actuate the attached DC motor provide some rotatry unbalances and parametric coupling in vibrating structure. applied energy harvesting overcomes limitation low generation associated with single this kind. system was solved analytically validated by numerical methods. global dynamics were investigated, nonlinear phenomena such as Neimark–Sacker bifurcation, discontinuity-induced grazing–sliding, bifurcation multiple tori identified. These behaviors affect harvested at points, resulting jumps from one level another. In addition harnessing highest under hard coupling, ensures that higher more useful over wider range speeds. Finally, qualitative validation concept experimental setup verifies workings model.

Language: Английский

Different bifurcations and slow dynamics underlying different stochastic dynamics of slow, medium, and fast bursting of β-cell

Nonlinear Dynamics, Journal Year: 2024, Volume and Issue: 112(22), P. 20309 - 20329

Published: Aug. 7, 2024

Language: Английский