DocumentCode :
1322640
Title :
Effect of material constants on power output in piezoelectric vibration-based generators
Author :
Takeda, H. ; Mihara, K. ; Yoshimura, Tetsuzo ; Hoshina, Takashi ; Tsurumi, Takaaki
Author_Institution :
Grad. Sch. of Sci. & Eng., Tokyo Inst. of Technol., Tokyo, Japan
Volume :
58
Issue :
9
fYear :
2011
fDate :
9/1/2011 12:00:00 AM
Firstpage :
1852
Lastpage :
1859
Abstract :
A possible power output estimation based on material constants in piezoelectric vibration-based generators is proposed. A modified equivalent circuit model of the generator was built and was validated by the measurement results in the generator fabricated using potassium sodium niobate-based and lead zirconate titanate (PZT) ceramics. Subsequently, generators with the same structure using other PZT-based and bismuth-layered structure ferroelectrics ceramics were fabricated and tested. The power outputs of these generators were expressed as a linear functions of the term composed of electromechanical coupling coefficients ksys2 and mechanical quality factors Q*m of the generator. The relationship between device constants (ksys2 and Q*m) and material constants (k312 and Qm) was clarified. Estimation of the power output using material constants is demonstrated and the appropriate piezoelectric material for the generator is suggested.
Keywords :
bismuth; energy harvesting; ferroelectric ceramics; lead compounds; piezoelectric devices; piezoelectric materials; potassium compounds; power supplies to apparatus; vibrations; PZT; device constants; electromechanical coupling; equivalent circuit; ferroelectrics ceramics; material constants; piezoelectric material; piezoelectric vibration based generators; power output; Ceramics; Couplings; Generators; Metals; Piezoelectric materials; Vibrations;
fLanguage :
English
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-3010
Type :
jour
DOI :
10.1109/TUFFC.2011.2023
Filename :
6020854
Link To Document :
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