Journal Title: MATEC Web of Conferences
ISSN: 2261-236X (Online)
Publisher: EDP Sciences
LCC Subject Category: Technology: Engineering (General). Civil engineering (General)
Country of publisher: France
Language of fulltext: French, English
Full-text formats available: PDF
de Pontes B. R.
Tusset A. M.
Balthazar J. M.
Abstract | Full Text
In this paper, we deal with the research of a vibrating model of an energy harvester device, including the nonlinearities in the model of the piezoelectric coupling and the non-ideal excitation. We show, using numerical simulations, in the analysis of the dynamic responses, that the harvested power is influenced by non-linear vibrations of the structure. Chaotic behavior was also observed, causing of the loss of energy throughout the simulation time. Using a perturbation technique, we find an approximate analytical solution for the non-ideal system. Then, we apply both two control techniques, to keep the considered system, into a stable condition. Both the State Dependent Ricatti Equation (SDRE) control as the feedback control by changing the energy of the oscillator, were efficient in controlling of the considered non-ideal system.