Active vibration damping using a reactive, self-sensing, electrodynamic actuator

Paulitsch, C., Gardonio, P. and Elliott, S.J. (2006) Active vibration damping using a reactive, self-sensing, electrodynamic actuator. Smart Materials and Structures, 15 (1), 1-10. (doi:10.1088/0964-1726/15/2/033).

Record type: Article

Abstract

Self-sensing active vibration damping is advantageous if external sensors cannot be collocated with the actuators or these sensors add too much weight or cost. When self-sensing, electrodynamic actuators are used damping is directly added to an attached structure without the need of potentially destabilizing electronic integrators or differentiators. In this paper self-sensing control with a shunted resistor, positive current feedback and induced voltage feedback are investigated in simulations and experiments. Experiments with a commercial shaker on a clamped plate show that its vibration attenuation is increased from 5 to 15 dB and the control bandwidth is more than doubled when the appropriate control scheme is used.

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