Proof-mass inertial vibration control using a shunted electromagnetic transducer.

Authors:	Fleming Andrew, University of Newcastle, Australia Moheimani Reza, University of Newcastle, Australia
Topic:	4.2 Mechatronic Systems
Session:	Vibration Control
Keywords:	Vibration dampers, Electromagnetic transducers, Inertial Platform, Damping, Active Noise Control

Abstract

Inertial drives and passive tuned-mass dampers utilize a suspended mass toreduce the vibration experienced by a host structure. Active vibration controlsystems typically include a voice-coil type electromagnetic actuator todevelop the required reaction forces. In this paper, the technique ofsensor-less active shunt control is applied to inertial vibration absorbtion.An electrical impedance is designed and connected to an electromagnetic coilwith a view to minimizing structural vibration. Standard optimal control toolscan be applied to design the required shunt impedance. The technique requiresno additional feedback sensors. Vibration in an experimental structure isheavily attenuated by the application of an active shunt impedance.