TITLE

Magnetopiezoelastic energy harvesting driven by random excitations

AUTHOR(S)
Litak, G.; Friswell, M. I.; Adhikari, S.
PUB. DATE
May 2010
SOURCE
Applied Physics Letters;5/24/2010, Vol. 96 Issue 21, p214103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This letter considers a nonlinear piezomagnetoelastic energy harvester driven by stationary Gaussian white noise. The increase in the energy generated by this device has been demonstrated for harmonic excitation with slowly varying frequency in simulation and validated by experiment. This paper considers the simulated response of this validated model to random base excitation and shows that the system exhibits a stochastic resonance. If the variance of the excitation were known then the device may be optimized to maximize the power harvested, even under random excitation.
ACCESSION #
51059309

 

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