Non-linear dynamics of a pendulum vibration absorber with a Maglev harvester

Abstract eng:
This paper describes and analyse a novel harvester-absorber device that uses magnetic levitation (maglev) in order to recover energy. The energy harvester is mounted in a pendulum which plays a dynamic absorber role. The non-linearity of the magnetic field suspension exhibits a hardening Duffing’s characteristics. We propose a new model of an electromechanical coupling which depends on a magnet position in a coil. Theoretical investigations are followed by a series of experimental tests that validate the theoretical predictions and allow us to obtain a final model of optimized harvester.

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