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자료유형
학술저널
저자정보
Zhang, Ying (School of Electrical and Computer Engineering, Georgia Institute of Technology) Zhu, Binghu (School of Electrical and Computer Engineering, Georgia Institute of Technology)
저널정보
테크노프레스 Smart structures and systems Smart structures and systems 제9권 제6호
발행연도
2012.1
수록면
549 - 563 (15page)

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Theoretical analysis is performed on a multi-mode energy harvester design with focus on the first two vibration modes. Based on the analysis, a modification is proposed for designing a novel adaptive multi-mode energy harvester. The device comprises a simply supported beam with distributed mass and piezoelectric elements, and an adaptive damper that provides a 180 degree phase shift for the motions of two supports only at the second vibration mode. Theoretical analysis and numerical simulations show that the new design can efficiently scavenge energy at the first two vibration modes. The energy harvesting capability of the multi-mode energy harvester is also compared with that of a cantilever-based energy harvester for single-mode vibration. The results show that the energy harvesting capacity is affected by the damping ratios of different designs. For fixed damping ratio and design dimensions, the multi-mode design has higher energy harvesting capacity than the cantilever-based design.

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