Nonlinear analysis of energy harvesting systems with fractional order physical properties
Artykuł w czasopiśmie
MNiSW
40
Lista A
| Status: | |
| Autorzy: | Kwuimy Cedrick A. Kitio, Litak Grzegorz, Nataraj C. |
| Rok wydania: | 2015 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 1-2 |
| Wolumen/Tom: | 80 |
| Strony: | 491 - 501 |
| Impact Factor: | 3,0 |
| Web of Science® Times Cited: | 66 |
| Scopus® Cytowania: | 74 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| An electromechanical energy harvesting system with a fractional order current–voltage relationship for the electrical circuit and fractional power law in the restoring force of its mechanical part is considered to act as an energy harvester. Our results show that, under a single-well potential configuration, for a small amplitude of the perturbation, as the order of derivative increases, the resonant amplitude of mechanical vibration decreases while the bending degree (hardening case) remains fairly constant. For a large amplitude of the perturbation, the output power is increased due to the hardening effects. Under a double-well configuration, the fractional power stiffness α strongly affects the crossing well dynamics (large amplitude motion) and consequently the output electrical power. The harvested electric power appears to be maximal for deterministic and random excitation for small α . High-level noise intensity is found to reduce the output power in the region of resonance and surprisingly increases the output in other regions of α . For sufficiently large amplitude of harmonic excitation, this effect is realized in a stochastic resonance. |
