... electromagnetic induction circuit as the energy harvesting element. The device is inherently a resonant type harvester. A prototype device is tested using a purely sinusoidal vibration input and more realistic inputs consisting of wider bandwidths, multiple resonance peaks, and low amplitude noise...

... sheet metal met-in. flexible structures design engineering noise engines vibration control resonance Chain drives compare favorably to gear drives for noise, cost, and durability, especially when designers are faced with spanning large center distances, one or more idler gears...

... geometry and contact forces that are crucial in gear dynamics. Importantly, no a priori specification of static transmission error excitation or mesh frequency variation is required; the dynamic contact forces are evaluated internally at each time step. The calculated response shows classical resonances...