Magnetopiezoelastic Energy Harvesting Driven by Random Excitations

G Litak (Lublin University of Technology, Poland), MI Friswell & S Adhikari (Swansea University)

Applied Physics Letters, Vol. 96, No. 21, May 2010, paper 214103


This letter considers a nonlinear piezomagnetoelastic energy harvester driven by stationary Gaussian white noise. The increase 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.

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This material has been published in the Applied Physics Letters, Vol. 96, No. 21, May 2010, paper 214103, the only definitive repository of the content that has been certified and accepted after peer review. Copyright and all rights therein are retained by the American Institute of Physics.

Link to paper using doi: 10.1063/1.3436553

Link to paper on the AIP website

Applied Physics Letters