Energy harvesting from vibration using a piezoelectric membrane
نویسندگان
چکیده
In this paper we investigate the capability of harvesting the electric energy from mechanical vibrations in a dynamic environment through a unimorph piezoelectric membrane transducer. Due to the impedance matrices connecting the efforts and flows of the membrane, we have established the dynamic electric equivalent circuit of the transducer. In a first study and in order to validate theoretical results, we performed experiments with a vibrating machine moving a macroscopic 25 mm diameter piezoelectric membrane.A power of 1.8 mWwas generated at the resonance frequency (2.58 kHz) across a 56 k optimal resistor and for a 2 g acceleration.
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