Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Maximizing harvested energy for linear vibrationbased generators
 Procedia Engineering 120 (2015), pp.641644 ISSN: 18777058 
 European Conference on SolidState Transducers (Eurosensors) <29, 2015, Freiburg> 

 English 
 Journal Article, Conference Paper, Electronic Publication 
 Fraunhofer IIS () 
Abstract
This work presents a new method that increases the energy conversion for linear vibrationbased generators. Actually, these generators are chosen to have their resonance frequency equal to the ambient vibration frequency that provides the maximum power amplitude of the acceleration. Nevertheless, there is a resonance frequency at which the acceleration power amplitude is lower but the energy is substantially higher since ambient vibration signals have several frequency components. A new method performing a spectrogram analysis, which does not miss the temporal information, as the Discrete Fourier Transform (DFT) analysis does, is realized. Thus, the harvested energy is considered instead of the harvested power. The method presented in this paper is validated with several real experiments.