A continuum mechanics approach for smart beams: Applications

C. Zehetner, J. Gerstmayr

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

Abstract

This paper concerns the control of flexural vibrations in smart beams subject to external and inertial forces. Exemplarily, a flexible beam with integrated piezoelectric actuators is considered. The equations of motion are derived within the framework of Bernoulli-Euler beam theory considering arbitrary large rigid-body motions with super-imposed small elastic deformations. From the equations of motion the shape control solution is derived, i.e. the necessary distribution of actuation strains is computed in order to completely compensate the flexible vibrations of the beam. This shape control solution represents a feed-forward control strategy. Additionally, a feedback control algorithm is implemented in order to compensate the remaining vibrations. Experimental results for an aluminium beam of rectangular cross-section with a number of 18 piezoelectric patches are presented, showing a significant reduction of the flexible vibrations with the help of the implemented control algorithm.

Original languageEnglish
Title of host publicationProceedings of the 10th International Conference on Computational Structures Technology, CST 2010
PublisherCivil-Comp Press
Volume93
ISBN (Print)9781905088386
Publication statusPublished - 2010
Externally publishedYes
Event10th International Conference on Computational Structures Technology, CST 2010 - Valencia, Spain
Duration: 14 Sep 201017 Sep 2010

Conference

Conference10th International Conference on Computational Structures Technology, CST 2010
CountrySpain
CityValencia
Period14.09.201017.09.2010

Keywords

  • Bernoulli-euler beam
  • Piezoelectric patches
  • Piezoelectric sensing and actuation
  • Rigid-body motion
  • Shape control
  • Vibration control

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