Performance enhancement of elastic-spring-supported piezoelectric cantilever generator by a 2-degree-of-freedom system

Chang Il Kim; Yong Ho Jang; Young Hun Jeong; Young Jin Lee; Jeong Ho Cho; Jong Hoo Paik; Sahn Nahm

doi:10.1143/APEX.5.037101

Performance enhancement of elastic-spring-supported piezoelectric cantilever generator by a 2-degree-of-freedom system

Chang Il Kim, Yong Ho Jang, Young Hun Jeong, Young Jin Lee, Jeong Ho Cho, Jong Hoo Paik, Sahn Nahm

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A piezoelectric cantilever generator using elastic springs as a supporting mechanism was fabricated for vibration-based energy harvester application. The optimum load resistance of 82 kω was selected to obtain the most effective output power. Two strong power peaks for the generator were obtained, being as high as 3.8 and 5.7mW for frequencies of 68 and 79 Hz, respectively. This implies that the generator is controlled by a 2 degree-of-freedom system, which can induce a wide resonance frequency bandwidth. Therefore, the performance of the piezoelectric cantilever generator can be enhanced with the aid of the elastic spring for broadband energy harvesting.

Original language	English
Article number	037101
Journal	Applied Physics Express
Volume	5
Issue number	3
DOIs	https://doi.org/10.1143/APEX.5.037101
Publication status	Published - 2012 Mar

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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abstract = "A piezoelectric cantilever generator using elastic springs as a supporting mechanism was fabricated for vibration-based energy harvester application. The optimum load resistance of 82 kω was selected to obtain the most effective output power. Two strong power peaks for the generator were obtained, being as high as 3.8 and 5.7mW for frequencies of 68 and 79 Hz, respectively. This implies that the generator is controlled by a 2 degree-of-freedom system, which can induce a wide resonance frequency bandwidth. Therefore, the performance of the piezoelectric cantilever generator can be enhanced with the aid of the elastic spring for broadband energy harvesting.",

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AU - Kim, Chang Il

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AU - Lee, Young Jin

AU - Cho, Jeong Ho

AU - Paik, Jong Hoo

AU - Nahm, Sahn

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AB - A piezoelectric cantilever generator using elastic springs as a supporting mechanism was fabricated for vibration-based energy harvester application. The optimum load resistance of 82 kω was selected to obtain the most effective output power. Two strong power peaks for the generator were obtained, being as high as 3.8 and 5.7mW for frequencies of 68 and 79 Hz, respectively. This implies that the generator is controlled by a 2 degree-of-freedom system, which can induce a wide resonance frequency bandwidth. Therefore, the performance of the piezoelectric cantilever generator can be enhanced with the aid of the elastic spring for broadband energy harvesting.

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Performance enhancement of elastic-spring-supported piezoelectric cantilever generator by a 2-degree-of-freedom system

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