发明授权
- 专利标题: Piezoelectric vibrational energy harvesting systems incorporating parametric bending mode energy harvesting
- 专利标题(中): 包含参数弯曲模式能量收集的压电振动能量采集系统
-
申请号: US12532322申请日: 2008-03-21
-
公开(公告)号: US08080920B2公开(公告)日: 2011-12-20
- 发明人: Robert G. Andosca , Junru Wu
- 申请人: Robert G. Andosca , Junru Wu
- 申请人地址: US VT Burlington
- 专利权人: The University of Vermont and State Agricultural College
- 当前专利权人: The University of Vermont and State Agricultural College
- 当前专利权人地址: US VT Burlington
- 代理机构: Downs Rachlin Martin PLLC
- 国际申请: PCT/US2008/057865 WO 20080321
- 国际公布: WO2008/116173 WO 20080925
- 主分类号: H01L41/113
- IPC分类号: H01L41/113
摘要:
Vibrational energy harvesting (VEH) structures that include resonant beams each having a fundamental resonance frequency and a parametric mode frequency and including at least one piezoelectric layer for generating electrical charge in response to each of fundamental-resonance excitation and parametric-mode excitation of that beam. Circuitry is provided for harvesting the electrical charge from the resonant beam. In some embodiments, the parametric mode frequency of the beam is tuned to be close to its fundamental resonance frequency so as to increase the effective bandwidth of a VEH structure. The effective bandwidth of a VEH structure can be further increased by tuning ones of multiple parametric-mode-enabled resonant beams to slightly different fundamental resonance frequencies and parametric mode frequencies.
公开/授权文献
信息查询
IPC分类: