期刊
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
卷 57, 期 3, 页码 868-876出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2009.2030761
关键词
Curved L-shaped mass; piezoelectric power harvesting; walking energy scavenging
This paper presents a cantilever piezoelectric power harvester with a curved L-shaped proof mass. With this novel proof mass, a lower fundamental frequency and a higher power density (output power per unit volume) were achieved. Three prototypes of 0.242 cm(3) in volume were fabricated and tested. A power density of 1.45 mW/cm(3) was achieved for the sinusoidal excitation of 0.75 g. The power harvester was also tested on a shoe at various walking speeds, and it generated an average power of 49 mu W at 3.0 mi/h.
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