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题名: Two Methods to Broaden the Bandwidth of a Nonlinear Piezoelectric Bimorph Power Harvester
作者: Hu, Hongping; Dai, Longxiang; Chen, Hao; Jiang, Shan; Wang, Hairen; Laude, Vincent
刊名: JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
出版日期: 2017
卷号: 139, 期号:3, 页码:31008-
英文摘要: We propose two methods to broaden the operation bandwidth of a nonlinear pinned-pinned piezoelectric bimorph power harvester. The energy-scavenging structure consists of a properly poled and electroded flexible bimorph with a metallic layer in the middle, and is subjected to flexural vibration. Nonlinear effects at large deformations near resonance are considered by taking the in-plane extension of the bimorph into account. The resulting output powers are multivalued and exhibit jump phenomena. Two methods to broaden the operation bandwidth are proposed: The first method is to extend the operation frequency to the left single-valued region through optimal design. The second method is to excite optimal initial conditions with a voltage source. Larger output powers in the multivalued region of the nonlinear harvester are obtained. Hence, the operation bandwidth is broadened from the left single-valued region to the whole multivalued region.
语种: 英语
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17347
Appears in Collections:毫米波和亚毫米波技术实验室_期刊论文

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