Influence of feedback on modal shapes and its consequences on broadband energy harvesting

C Giraud-Audine (1) , Frédéric Giraud (1) , M Amberg (1)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697

We study the effect of feedback on an energy harvester for broadband applications. Using modal analysis we show that it has an influence on modal shape as a side effect of the resonance shifting. We show that the piezoelectric coupling can thus be reduced. Experimental results are in agreement and also reveal that non-linear effects are promoted in some cases.

Mots clés: Piezoelectric; broadband energy harvesting; modal analysis

Domaines: Mécanique des structures [physics.class-ph]; Vibrations [physics.class-ph]

C Giraud-Audine, Frédéric Giraud, M Amberg. Influence of feedback on modal shapes and its consequences on broadband energy harvesting. Joint Ieee International Symposium on ISAF IWATMD PFM, May 2014, PennState University, United States. pp.4, ⟨10.1109/ISAF.2014.6922971⟩. ⟨hal-01254893⟩