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Due to the non-linearity in frequency up-conversion mechanisms and the stochastic nature of real world vibrations, it is necessary to analyse these systems under such conditions. Here we present a validation experiment of a previously developed frequency up- conversion mechanism under stochastic excitation and across multiple design parameters. From this, an increase from between 69% at 7Hz and 153%...
This paper presents a new mechanism for achieving frequency up-conversion in low frequency vibrational energy harvesting device, utilising the contact interaction between an end-stop and a cantilever beam. A mechanical model of the mechanism has been developed for simulation and a prototype device was fabricated to demonstrate the effect experimentally. Simulation showed an increase in the oscillation...
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