Experimental and theoretical studies on piezoelectric energy harvesting from low-frequency ambient random vibrations

In this paper, an analytical approach was used to formulate for gathering energy from ambient sources of vibrations. The apparatus consists of a cantilevered beam harvester with a piezoelectric patch. A coupled electromechanical modal model based on Euler–Bernoulli theory is used. The governing equa...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part C, Journal of mechanical engineering science Journal of mechanical engineering science, 2016-08, Vol.230 (14), p.2363-2375
Main Authors: Karimi, M, Tikani, R, Ziaei-Rad, S, Mirdamadi, HR
Format: Article
Language:English
Subjects:
Acceleration
Bernoulli Hypothesis
Cantilever beams
Deviation
Electric power generation
Energy
Eulers equations
Experiments
Mathematical analysis
Mathematical models
Normal distribution
Piezoelectricity
Vibration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, an analytical approach was used to formulate for gathering energy from ambient sources of vibrations. The apparatus consists of a cantilevered beam harvester with a piezoelectric patch. A coupled electromechanical modal model based on Euler–Bernoulli theory is used. The governing equations were extracted using Hamilton’s principle and then were discretized by using the Rayleigh–Ritz approach. The expected value of the electrical power output was obtained for a weakly stationary, Gaussian bandpass with zero mean base excitation. Next, a numerical solution for the beam under band-limited ambient random acceleration as the input was calculated and validated by experiment. The numerical results closely correlated to the experimental data with a deviation of about 10%.
ISSN:0954-4062
2041-2983
DOI:10.1177/0954406215593569