Resonant passive–active vibration absorber with integrated force feedback control

Jan Becker Høgsberg, Mark Laier Brodersen, Steen Krenk

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Abstract

A general format of a two-terminal vibration absorber is constructed by placing a passive unit in series with a hybrid unit, composed of an active actuator in parallel with a second passive element. The displacement of the active actuator is controlled by an integrated feedback control with the difference in force between the two passive elements as input. This format allows passive and active contributions to be combined arbitrarily within the hybrid unit, which results in a versatile absorber format with guaranteed closed-loop stability. This is demonstrated for resonant absorbers with inertia realized passively by a mechanical inerter or actively by the integrated force feedback. Accurate calibration formulae are presented for two particular absorber configurations and the performance is subsequently demonstrated with respect to both equal modal damping and effective response reduction.
Original languageEnglish
Article number047001
JournalSmart Materials and Structures
Volume25
Issue number4
Number of pages8
ISSN0964-1726
DOIs
Publication statusPublished - 2016

Keywords

  • Passive–active vibration absorber
  • Structural dynamics
  • Vibration control
  • Integrated force feedback control
  • Tuned mass damper
  • Tuned inerter damper

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