Imperial College London
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ProfessorHailingFu

Faculty of Engineering, Department of Aeronautics

Visiting Researcher
 
 
 
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Contact

 

h.fu14 Website CV

 
 
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Location

 

420City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Fu:2018:1361-665X/aacOba,
author = {Fu, H and Yeatman, EM},
doi = {1361-665X/aacOba},
journal = {Smart Materials and Structures},
title = {Effective piezoelectric energy harvesting using beam plucking and a synchronized switch harvesting circuit},
url = {http://dx.doi.org/10.1088/1361-665X/aacOba},
volume = {27},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Piezoelectric energy harvesting, as a way to convert kinetic energy into electricity for low-power electronics, has drawn great attention for the last decade. However, issues still remain, including narrow operating bandwidth and low harvesting capability. In this paper, beam plucking (frequency up-conversion) and a parallel synchronized switch harvesting on inductor (P-SSHI) circuit are integrated in a piezoelectric energy harvester to improve the energy harvesting capability over a wide operating bandwidth. A theoretical model for the plucked beam is established using a distributed-parameter method. In order to study the system dynamics, an equivalent circuit for the plucked beam is built to integrate with the P-SSHI circuit. System dynamics, including the input power, beam tip displacement and output power, are investigated for different driving frequencies and load resistance. The plucked beam provides a uniform and single-frequency vibration for the P-SSHI to generate reliable switching events for any low-frequency wideband vibration; the P-SSHI circuit exhibits an improved electrical damping ratio which is beneficial to alleviating the power fluctuation issue for plucked beams at high frequencies. An experimental validation was conducted, and a close match was obtained. Enhanced output power with low power fluctuation was obtained in the Plucked Beam and P-SSHI circuit (PBPS) configuration over a wide frequency bandwidth with constant load resistance.
AU  - Fu,H
AU  - Yeatman,EM
DO  - 1361-665X/aacOba
PY  - 2018///
SN  - 0964-1726
TI  - Effective piezoelectric energy harvesting using beam plucking and a synchronized switch harvesting circuit
T2  - Smart Materials and Structures
UR  - http://dx.doi.org/10.1088/1361-665X/aacOba
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000438675300003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://iopscience.iop.org/10.1088/1361-665X/aac0ba
UR  - http://hdl.handle.net/10044/1/59949
VL  - 27
ER  -
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