TY - JOUR
T1 - A flex-compressive-mode piezoelectric transducer for mechanical vibration/strain energy harvesting
AU - Li, Xiaotian
AU - Guo, Mingsen
AU - Dong, Shuxiang
N1 - Funding Information:
Manuscript received July 23, 2010; accepted october 28, 2010. This work was supported by the national natural science Foundation of china (Grant no. 50872002) and national Basic research program of china (973 program, Grant no. 2009cB623303).
PY - 2011/4
Y1 - 2011/4
N2 - A piezoelectric transducer for harvesting energy from ambient mechanical vibrations/strains under pressure condition was developed. The proposed transducer was made of two ring-type piezoelectric stacks, one pair of bow-shaped elastic plates, and one shaft that pre-compresses them. This transducer works in flex-compressive (F-C) mode, which is different from a conventional flex-tensional (F-T) one, to transfer a transversely applied force F into an amplified longitudinal force N pressing against the two piezo-stacks via the two bowshaped elastic plates, generating a large electric voltage output via piezoelectric effect. Our experimental results show that without an electric load, an F-C mode piezo-transducer could generate a maximum electric voltage output of up to 110 Vpp, and with an electric load of 40 kΩ, it a maximum power output of 14.6 mW under an acceleration excitation of 1 g peak-peak at the resonance frequency of 87 Hz.
AB - A piezoelectric transducer for harvesting energy from ambient mechanical vibrations/strains under pressure condition was developed. The proposed transducer was made of two ring-type piezoelectric stacks, one pair of bow-shaped elastic plates, and one shaft that pre-compresses them. This transducer works in flex-compressive (F-C) mode, which is different from a conventional flex-tensional (F-T) one, to transfer a transversely applied force F into an amplified longitudinal force N pressing against the two piezo-stacks via the two bowshaped elastic plates, generating a large electric voltage output via piezoelectric effect. Our experimental results show that without an electric load, an F-C mode piezo-transducer could generate a maximum electric voltage output of up to 110 Vpp, and with an electric load of 40 kΩ, it a maximum power output of 14.6 mW under an acceleration excitation of 1 g peak-peak at the resonance frequency of 87 Hz.
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U2 - 10.1109/TUFFC.2011.1862
DO - 10.1109/TUFFC.2011.1862
M3 - Article
C2 - 21507747
AN - SCOPUS:79955380630
SN - 0885-3010
VL - 58
SP - 698
EP - 703
JO - IEEE transactions on ultrasonics, ferroelectrics, and frequency control
JF - IEEE transactions on ultrasonics, ferroelectrics, and frequency control
IS - 4
M1 - 5750091
ER -