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Title: Multi-resonant wideband energy harvester based on a folded asymmetric M-shaped cantilever

This article reports a compact wideband piezoelectric vibration energy harvester consisting of three proof masses and an asymmetric M-shaped cantilever. The M-shaped beam comprises a main beam and two folded and dimension varied auxiliary beams interconnected through the proof mass at the end of the main cantilever. Such an arrangement constitutes a three degree-of-freedom vibrating body, which can tune the resonant frequencies of its first three orders close enough to obtain a utility wide bandwidth. The finite element simulation results and the experimental results are well matched. The operation bandwidth comprises three adjacent voltage peaks on account of the frequency interval shortening mechanism. The result shows that the proposed piezoelectric energy harvester could be efficient and adaptive in practical vibration circumstance based on multiple resonant modes.
Authors:
; ; ; ;  [1] ; ;  [1] ;  [2]
  1. Key laboratory of Microelectronics Devices & Integrated Technology, Institute of Microelectronics, Chinese Academic of Sciences, Beijing 100029 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22492258
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ASYMMETRY; COMPACTS; COMPUTERIZED SIMULATION; DEGREES OF FREEDOM; ELECTRIC POTENTIAL; ELECTRIC UTILITIES; FINITE ELEMENT METHOD; MASS; MECHANICAL VIBRATIONS; OPERATION; PIEZOELECTRICITY