Nonlinear Response Identification of an Asymmetric Bistable Harvester Excited at Different Bias Angles by Multiscale Entropy and Recurrence Plot
Fragment książki (Materiały konferencyjne)
MNiSW
20
Poziom I
| Status: | |
| Autorzy: | Wang Wei, Cao Junyi, Bowen Chris R., Litak Grzegorz |
| Dyscypliny: | |
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| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Strony: | 1 - 7 |
| Scopus® Cytowania: | 0 |
| Bazy: | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | TAK |
| Nazwa konferencji: | International Design Engineering Technical Conferences and Computers and Information in Engineering Conference Vol. 8, 31st Conference on Mechanical Vibration and Noise |
| Skrócona nazwa konferencji: | ASME 2019 |
| URL serii konferencji: | LINK |
| Termin konferencji: | 18 kwietnia 2019 do 21 kwietnia 2019 |
| Miasto konferencji: | Anaheim |
| Państwo konferencji: | STANY ZJEDNOCZONE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Due to their high sensitivity to excitations with low intensity, bistable energy harvesting systems have received significant attention. In practical applications, it is difficult to achieve a bistable energy harvester (BEH) with a perfectly symmetric potential energy function. Moreover, gravity acts to exert a significant influence on the output response of a BEH oscillator when excited at different bias angles. Therefore, the experimental output voltage time-series of an asymmetric potential BEH are examined in this paper. The BEH studied here is composed of a cantilever beam, two piezoelectric layers at the root and two magnets at the end, and subjected to harmonic excitations at different bias angles. The energy harvesting system exhibited intra-well, periodic and chaotic snap-through vibrational patterns under different excitation frequencies at different bias angles. To better understand the multiple dynamic behaviors of the system corresponding to different power outputs, we identified the output voltage response by the methods of multiscale entropy and recurrence plots. Results indicate that periodic and chaotic vibrational patterns can be readily distinguished by the methods employed. Furthermore, it is demonstrated that the bias angle had a significant influence on the output power of the asymmetric potential BEH. |
