Other video on NiPS lab activities: clic here !!!
Video by Wisepower srl on the wisepower effect
An inverted pendulum with a four-layer piezoelectric beam clamped at one end behaves in this configuration like a bistable oscillator. The random vibrations make the pendulum swing with small oscillations around each of the two equilibrium positions and large excursions from one to the other.
The power harvesting in this case increases between 400% and 600% compared to the standard linear oscillators.