Note: This content is accessible to all versions of every browser. However, this browser does not seem to support current Web standards, preventing the display of our site's design details.

  

Structural Vibration Control via R-L Shunted Active Fiber Composites

Author(s):

A. Belloli, D. Niederberger, M. Morari, P. Ermanni
Conference/Journal:

Journal of Intelligent Material Systems and Structures, vol. 18, no. 3, pp. 275-287
Abstract:

This article presents a successful extension of passive RL shunt damping to piezoelectric ceramic elements working in direct 3-3 mode and a performance comparison to elements working in indirect 3-1 mode. A new circuit topology is implemented to synthesize the very large inductances required by the low inherent piezoelectric device capacitance at relatively low frequencies. This allows for efficient tuning of the RL circuit to the structure resonance frequency to be damped. The vibration suppression performance of monolithic piezoelectric ceramic actuators and active fiber composites is compared in this study. For this purpose, different actuators are bonded on aluminum cantilever plates. An integrated FE model is implemented for the prediction of structure resonance frequencies, optimum values for electric components, and the resulting vibration suppression performance. The passive structure, bonded active patch, and shunted electrical network are analyzed within the same FE model. Active fiber composite patches working in the direct 3-3 mode show equivalent specific damping performance compared to conventional monolithic 3-1 actuated patches. Issues related to the sensitivity of RL shunts to variations in environmental and operational conditions are discussed in this study. In short, monolithic actuators operating on the 3-1 piezoelectric effect seem to be the best for use in RL shunting.

Year:

2007
Type of Publication:

(01)Article
Supervisor:



File Download:

Request a copy of this publication.
(Uses JavaScript)
% Autogenerated BibTeX entry
@Article { BelEtal:2007:IFA_2412,
    author={A. Belloli and D. Niederberger and M. Morari and P. Ermanni},
    title={{Structural Vibration Control via R-L Shunted Active Fiber
	  Composites}},
    journal={Journal of Intelligent Material Systems and Structures},
    year={2007},
    volume={18},
    number={3},
    pages={275--287},
    month=mar,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=2412}
}
Permanent link