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Actuators 2016, 5(1), 7; doi:10.3390/act5010007

Adaptive Piezoelectric Absorber for Active Vibration Control

Fraunhofer Institute for Structural Durability and System Reliability LBF, Bartningstr. 47, 64823 Darmstadt, Germany
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Academic Editor: Kenji Uchino
Received: 14 December 2015 / Revised: 31 January 2016 / Accepted: 15 February 2016 / Published: 29 February 2016
(This article belongs to the Special Issue Piezoelectric Actuators)
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Abstract

Passive vibration control solutions are often limited to working reliably at one design point. Especially applied to lightweight structures, which tend to have unwanted vibration, active vibration control approaches can outperform passive solutions. To generate dynamic forces in a narrow frequency band, passive single-degree-of-freedom oscillators are frequently used as vibration absorbers and neutralizers. In order to respond to changes in system properties and/or the frequency of excitation forces, in this work, adaptive vibration compensation by a tunable piezoelectric vibration absorber is investigated. A special design containing piezoelectric stack actuators is used to cover a large tuning range for the natural frequency of the adaptive vibration absorber, while also the utilization as an active dynamic inertial mass actuator for active control concepts is possible, which can help to implement a broadband vibration control system. An analytical model is set up to derive general design rules for the system. An absorber prototype is set up and validated experimentally for both use cases of an adaptive vibration absorber and inertial mass actuator. Finally, the adaptive vibration control system is installed and tested with a basic truss structure in the laboratory, using both the possibility to adjust the properties of the absorber and active control. View Full-Text
Keywords: inertial mass actuator; piezoelectric actuator; adaptive system; vibration control inertial mass actuator; piezoelectric actuator; adaptive system; vibration control
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Herold, S.; Mayer, D. Adaptive Piezoelectric Absorber for Active Vibration Control. Actuators 2016, 5, 7.

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