Supragaussian-Fluctuaction Energy Harvesting by Piezoelectric Method, Through Monostable Squarewell-Like Oscillators: An Electronic Analogy

Enhancing energy harvesting by coupling monostable oscillators

“…In the spirit of [7,8,9] (see also [12,13,14]) we start out by considering a one-dimensional inertial nonlinear oscillator x(t)-with mass m, damping constant γ, and governed by a monostable potential U (x)-coupled with strength σ to a source of mechanical vibrations that produces an instantaneous force ξ(t), and to a piezoelectric transducer. The latter provides a voltage V (t) = K c x(t), and reacts back on the oscillator with a force K v V (t).…”

“…multimodal energy harvesting, resonance-tuning methods or frequency up-conversion [6]. Several recent works [7,8,9,10,11] have stressed non-linearity as a resource to overcome this problem, specially if the vibration statistics is broader than Gaussian [12,13,14]. Considering moreover that for the phenomenon of stochastic resonance [15,16]-a paradigm of the constructive interplay between stochasticity and nonlinearity-coupling between units enhances the collective response [17,18,19,20,21,22], here too one finds that coupling can boost the overall efficiency [23,24,25].…”