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The European Physical Journal Special Topics

, Volume 222, Issue 7, pp 1699–1705 | Cite as

A comparison between nonlinear cantilever and buckled beam for energy harvesting

  • H. Vocca
  • F. Cottone
  • I. Neri
  • L. Gammaitoni
Regular Article

Abstract

Nonlinear dynamics has become one of the key aspect to improve the efficiency of kinetic energy harvesters working in the real environment. Different methods based on the exploitation of the dynamical features of stochastic nonlinear oscillators using bi-stable piezoelectric cantilevers or buckled beams have been proposed in the past years. Such methods are shown to outperform standard linear oscillators and to overcome some of the most severe limitations of present approaches once applied to ambient vibrations. This work presents simulation results comparing the two methods. The same piezoelectric element subjected to a fixed vibrating body in a cantilever or bridge configuration has been simulated. The kinetic excitation considered is a zero mean exponentially correlated gaussian noise with different amplitudes. The piezoelectric oscillator output response has been obtained as a function of a nonlinear parameter. This work is intended to help designing the most performing energy harvester for real world applications starting from the same piezoelectric element.

Keywords

Wireless Sensor Network European Physical Journal Special Topic Piezoelectric Element Ambient Vibration Noise Standard Deviation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences and Springer 2013

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of PerugiaPerugiaItaly
  2. 2.Université Paris-Est, ESYCOM, ESIEE ParisNoisy-le-GrandFrance

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