Investigation of a Nonlinear Vibrational Energy Harvester in the Stochastic Resonance Regime

Proceedings

Bulsara, Adi R.¹  Andò, Bruno²  Marletta, Vincenzo³  Baglio, Salvatore⁴ 

[1] Author to whom correspondence should be addressed.;Department of Electric Electronic and Information Engineering, University of Catania, 95125 Catania, Italy;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.;Space and Naval Warfare Systems Center Pacific, Code 71000, San Diego, CA 92152-5000, USA

关键词: vibrations;    nonlinear harvester;    snap through buckling;    stochastic resonance;    piezoelectric transducers;   

DOI  :  10.3390/proceedings2131092

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

In this paper the possibility to exploit advantageously the Stochastic Resonance phenomenon in a Nonlinear Energy Harvester to scavenge energy from wide band mechanical vibrations is experimentally demonstrated. The device is demonstrated to be capable of scavenging energy in case of a subthreshold sinusoidal vibration and a wideband noise (limited at 100 Hz) superimposed. The existence of an optimal value of the noise intensity maximizing the switching ratio of the bistable beam, then the performances, is experimentally demonstrated. The harvester is observed to generate power up to about 60 µW and 150 µW in case of a subthreshold sinusoidal input at 1 Hz and 3 Hz with a superimposed noise limited at 100 Hz.

【 授权许可】

CC BY