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2. Conversion principle
2.1 Resonant systems
Energy recovery from mechanical vibrations is based on the use of a resonant inertial system with a natural frequency equal to or close to that of the excitation to which the system is subjected. There are usually three families of generators :
resonant generators with speed-proportional damping ;
resonant generators with a damping force having a constant amplitude opposite to the displacement;
parametric generators...
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Conversion principle
Piezoelectric generators
Bibliography
Websites
Free Energy Group http://freeenergygroup.com/
Energy harvesting journal http://www.energyharvestingjournal.com/
EAPAD, electroactive polymers http://ndeaa.jpl.nasa.gov/
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