Advances in low-power electronics and in energy harvesting technologies have enabled the conception of truly self-powered devices. Nevertheless, most studies rely on steady-state assumptions, which are rarely available in real environments. This article exposes, as a first step, a study of the transient stage of vibration energy harvesting systems initially at rest both mechanically and electrically (null initial displacement and voltages), when the harvesting device is submitted to a time-limited sine force at its resonance frequency. A particular focus will be placed on the total energy harvested as well as on the time of harvesting, allowing a better understanding of the dynamics of harvesting processes for systems subjected to time-limited excitations.
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