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Adaptive Multi-mode Resonant Piezoelectric Shunt Damping

Author(s):

D. Niederberger, A. Fleming, S.O.R. Moheimani, M. Morari
Conference/Journal:

Journal of Smart Materials and Structures, vol. 13, pp. 1025-1035
Abstract:

Multiple-modes of structural vibration can be suppressed through the connection of an electrical impedance to the terminals of a bonded piezoelectric transducer. One commonly used class of shunt impedances, the so-called resonant shunts, provide good nominal damping performance but are highly sensitive to variations in transducer capacitance and structural resonance frequencies. This paper introduces a new technique for the online adaptation of multi-mode resonant shunts. By minimizing the relative phase difference between a vibration reference signal and the shunt current, circuit component values can be optimally tuned online. Experiments on a cantilever beam validate the proposed technique and demonstrate the simplicity of implementation. The adaptive law converges quickly and maintains optimal performance in the presence of environmental uncertainties.

Further Information
Year:

2004
Type of Publication:

(01)Article
Supervisor:



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% Autogenerated BibTeX entry
@Article { NieEtal:2004:IFA_1812,
    author={D. Niederberger and A. Fleming and S.O.R. Moheimani and M. Morari},
    title={{Adaptive Multi-mode Resonant Piezoelectric Shunt Damping}},
    journal={Journal of Smart Materials and Structures},
    year={2004},
    volume={13},
    number={},
    pages={1025--1035},
    month=sep,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=1812}
}
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