Magnetopiezoelastic energy harvesting driven by random excitations

被引：289

作者：

Litak, G. ^{[1
]}

Friswell, M. I. ^{[2
]}

Adhikari, S. ^{[2
]}

机构：

[1] Tech Univ Lublin, Dept Appl Mech, PL-20618 Lublin, Poland

[2] Swansea Univ, Sch Engn, Swansea SA2 8PP, W Glam, Wales

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 21期

关键词：

magnetoelastic effects; nonlinear dynamical systems; white noise; PIEZOELECTRIC MATERIALS; STOCHASTIC RESONANCE; RANDOM VIBRATIONS; SYSTEMS; OUTPUT;

D O I：

10.1063/1.3436553

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (C) 2010 American Institute of Physics. [doi:10.1063/1.3436553]

引用

页数：3

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