Improved resistive shunt by means of negative capacitance: new circuit, performances and multi-mode control

Marta Berardengo 1 Olivier Thomas 2 Christophe Giraud-Audine 3 Stefano Manzoni 1
1 POLIMI - Politecnico di Milano [Milan]
2 LSIS - Laboratoire des Sciences de l'Information et des Systèmes
3 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - EA 2697
Abstract : This paper deals with vibration control by means of piezoelectric patches shunted with electrical impedances made up by a resistance and a negative capacitance. The paper analyses most of the possible layouts by which a negative capacitance can be built and shows that a common mathematical description is possible. This allows closed formulations to be found in order to optimise the electrical network for mono- and multi-mode control. General analytical formulations are obtained to estimate the performance of the shunt in terms of vibration reduction. In particular, it is highlighted that the main effect of a negative capacitance is to artificially enhance the electromechanical coupling factor, which is the basis of performance estimation. Stability issues relating to the use of negative capacitances are especially addressed using refined models for the piezoelectric patch capacitance. Furthermore, a new circuit based on a couple of negative capacitances is proposed and tested, showing better performances than those provided by the usual layouts with a single negative capacitance. Finally, guidelines and analytical formulations to deal with the practical implementation of negative capacitance circuits are provided.
Keywords : Piezoelectric shunt negative capacitance Vibration control Damping Smart structure
Document type :
Journal articles
Complete list of metadatas

Cited literature [14 references]  Display  Hide  Download
https://hal.archives-ouvertes.fr/hal-01392666
Contributor : Compte de Service Administrateur Ensam <>
Submitted on : Friday, November 4, 2016 - 3:35:51 PM
Last modification on : Tuesday, August 13, 2019 - 11:10:03 AM
Long-term archiving on : Sunday, February 5, 2017 - 2:24:17 PM

File

L2EP__SMS_Thomas_2016.pdf
Files produced by the author(s)

Identifiers

Collections

LSIS | UNIV-AMU | UNIV-TLN | LIS-LAB | UNIV-LILLE | UNIV-HESAM

Citation

Marta Berardengo, Olivier Thomas, Christophe Giraud-Audine, Stefano Manzoni. Improved resistive shunt by means of negative capacitance: new circuit, performances and multi-mode control. Smart Materials and Structures, IOP Publishing, 2016, 25, pp.075033. ⟨10.1088/0964-1726/25/7/075033⟩. ⟨hal-01392666⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

269

Files downloads

201

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD