Simulation of an Electrostatic Energy Harvester at Large Amplitude Narrow and Wide Band Vibrations

Details Simulation of an Electrostatic Energy Harvester at Large Amplitude Narrow and Wide Band Vibrations Simulation of an Electrostatic Energy Harvester at Large Amplitude Narrow and Wide Band Vibrations

2008-05-07

arxiv.org/abs/0805.0876v1

Dans Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS - DTIP 2008, Nice : France (2008)

Computer Science

Other Computer Science

Submitted on behalf of EDA Publishing Association (http://irevues.inist.fr/handle/2042/16838)

Scientific paper

An electrostatic in-plane overlap varying energy harvester is modeled and simulated using a circuit simulator. Both linear and nonlinear models are investigated. The nonlinear model includes mechanical stoppers at the displacement extremes. Large amplitude excitation signals, both narrow and wide band, are used to emulate environmental vibrations. Nonlinear behavior is significant at large displacement due to the impact on mechanical stoppers. For a sinusoidal excitation the mechanical stoppers cause the output power to flatten and weakly decrease. For a wide band excitation, the output power first increases linearly with the power spectral density of the input signal, then grows slower than linearly.

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