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:2018:10.3390/s18030804,
author = {Fu, H and Chen, G and Bai, N},
doi = {10.3390/s18030804},
journal = {Sensors},
title = {Electrode coverage optimization for piezoelectric energy harvesting from tip excitation},
url = {http://dx.doi.org/10.3390/s18030804},
volume = {18},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Piezoelectric energy harvesting using cantilever-type structures has been extensively investigated due to its potential application in providing power supplies for wireless sensor networks, but the low output power has been a bottleneck for its further commercialization. To improve the power conversion capability, a piezoelectric beam with different electrode coverage ratios is studied theoretically and experimentally in this paper. A distributed-parameter theoretical model is established for a bimorph piezoelectric beam with the consideration of the electrode coverage area. The impact of the electrode coverage on the capacitance, the output power and the optimal load resistance are analyzed, showing that the piezoelectric beam has the best performance with an electrode coverage of 66.1%. An experimental study was then carried out to validate the theoretical results using a piezoelectric beam fabricated with segmented electrodes. The experimental results fit well with the theoretical model. A 12% improvement on the Root-Mean-Square (RMS) output power was achieved with the optimized electrode converge ratio (66.1%). This work provides a simple approach to utilizing piezoelectric beams in a more efficient way.
AU  - Fu,H
AU  - Chen,G
AU  - Bai,N
DO  - 10.3390/s18030804
PY  - 2018///
SN  - 1424-2818
TI  - Electrode coverage optimization for piezoelectric energy harvesting from tip excitation
T2  - Sensors
UR  - http://dx.doi.org/10.3390/s18030804
UR  - http://hdl.handle.net/10044/1/57798
VL  - 18
ER  -
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