Modeling of piezoelectric energy harvesting from an l-shaped beam-mass structure with an application to UAVs

A Erturk, J Renno, DJ Inman

Research output: Contribution to journalArticle (Academic Journal)peer-review

304 Citations (Scopus)

Abstract

Cantilevered piezoelectric energy harvesters have been extensively investigated in the literature of energy harvesting. As an alternative to conventional cantilevered beams, this article presents the L-shaped beam-mass structure as a new piezoelectric energy harvester configuration. This structure can be tuned to have the first two natural frequencies relatively close to each other, resulting in the possibility of a broader band energy harvesting system. This article describes the important features of the L-shaped piezoelectric energy harvester configuration and develops a linear distributed parameter model for predicting the electromechanically coupled voltage response and displacement response of the harvester structure. After deriving the coupled distributed parameter model, a case study is presented to investigate the electrical power generation performance of the L-shaped energy harvester. A direct application of the L-shaped piezoelectric energy harvester configuration is proposed for use as landing gears in unmanned air vehicle applications and a case study is presented where the results of the L-shaped — energy harvester — landing gear are favorably compared against the published experimental results of a curved beam configuration used for the same purpose.
Translated title of the contributionModeling of piezoelectric energy harvesting from an l-shaped beam-mass structure with an application to UAVs
Original languageEnglish
Pages (from-to)529 - 544
Number of pages15
JournalJournal of Intelligent Material Systems and Structures
Volume20(5)
DOIs
Publication statusPublished - Mar 2009

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