Energy harvesting using piezoelectric materials: Case of random vibrations

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Vibration harvesting in traffic tunnels to power wireless sensor nodes (2011, result): “The authors of [19] showed in their subsequent work [21] that SECE is well suited for ambient vibrations and increases the power output by a factor of 2 compared to the standard techniques.”
Modeling and experimental verification of low-frequency MEMS energy harvesting from ambient vibrations (2011, background): “Two research groups have presented meso-, or centimeter-, scale harvesters tested with random vibration input on a vibrometer in order to explore which power conditioning schemes [14] and energy storage configurations [15] work well with random vibrations.”
Energy harvesting from base excitation of ionic polymer metal composites in fluid environments (2009, background): “from broad frequency ranges is discussed in [17].”
Design of Piezoelectric Energy Harvesting Systems: A Topology Optimization Approach Based on Multilayer Plates and Shells (2009, methodology): “A number of authors (Ottman et al., 2002; Ottman et al., 2003; Lesieutre et al., 2004; Lefeuvre et al., 2005a, 2007; Shu and Lien, 2006a, b; Shu et al., 2007) provide sophisticated circuit designs for charging a battery with a piezoelectric energy harvester; Lefeuvre et al. (2005b) provide a…”