A novel vibration control method utilizing magnetically mounted piezoelectric actuators is described. Piezoelectric actuators are bonded to permanent magnets, which are attached to the surface of a steel cantilever beam through their magnetic attraction. The magnetic-piezoelectric control mounts are an alternative to traditional epoxy attachment methods for piezoelectrics which allows easy in-the-field reconfiguration. In model and laboratory measurements, the beam is driven through base excitation and the resonant shunt and synchronized switching techniques are applied to two magnetic-piezoelectric control mounts to attenuate vibration. The coupled system is discretized using a Galerkin finite element model that incorporates relative axial motion between the beam and the mounts, which is governed by the sticking contact stiffness per unit length of the beam-magnet interface. The control mounts are designed using a magnetic array configuration which increases the attraction force for a given magnet thickness. Results show that the magnetic-piezoelectric control mounts provide attenuation, while also providing the flexibility to easily adjust the actuators along the length of the beam.
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ASME 2008 International Mechanical Engineering Congress and Exposition
October 31–November 6, 2008
Boston, Massachusetts, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4872-2
PROCEEDINGS PAPER
Vibration Control With Magnetically Mounted Piezoelectric Actuators
J. C. Collinger,
J. C. Collinger
Carnegie Mellon University, Pittsburgh, PA
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W. C. Messner,
W. C. Messner
Carnegie Mellon University, Pittsburgh, PA
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J. A. Wickert
J. A. Wickert
Iowa State University, Ames, IA
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J. C. Collinger
Carnegie Mellon University, Pittsburgh, PA
W. C. Messner
Carnegie Mellon University, Pittsburgh, PA
J. A. Wickert
Iowa State University, Ames, IA
Paper No:
IMECE2008-67369, pp. 481-488; 8 pages
Published Online:
August 26, 2009
Citation
Collinger, JC, Messner, WC, & Wickert, JA. "Vibration Control With Magnetically Mounted Piezoelectric Actuators." Proceedings of the ASME 2008 International Mechanical Engineering Congress and Exposition. Volume 11: Mechanical Systems and Control. Boston, Massachusetts, USA. October 31–November 6, 2008. pp. 481-488. ASME. https://doi.org/10.1115/IMECE2008-67369
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