Guidelines for the layout and tuning of piezoelectric resonant shunt with negative capacitances in terms of dynamic compliance, mobility and accelerance
Article dans une revue avec comité de lecture
JournalJournal of Intelligent Material Systems and Structures
This paper addresses the vibration attenuation provided by the resonant piezoelectric shunt enhanced by means of negative capacitances. The shunt impedance is composed by one or two negative capacitances, a resistance and an inductance. It is shown that closed analytical formulations, common to all the possible connections of the negative capacitances, can be derived for the tuning of the circuit components and for the prediction of the attenuation in terms of dynamic compliance, mobility and accelerance. The paper also compares the attenuation performance provided by the two possible layouts for the electrical link between the resistance and the inductance, that are series and parallel. Furthermore, this work evidences which shunt configurations offer advantages in terms of practical implementation and the benefits provided by the use of negative capacitances in the shunt circuit. In the last part of the paper, guidelines for the use of resonant shunt are given to the reader and, finally, the theoretical results are validated by means of an experimental campaign showing that it is possible to cancel the resonance on which the resonant shunt is targeted.
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The reduction of operational amplifier electrical outputs to improve piezoelectric shunts with negative capacitance Article dans une revue avec comité de lectureBERARDENGO, Marta; MANZONI, Stefano; THOMAS, Olivier; GIRAUD-AUDINE, Christophe; DRAGO, L.; MARELLI, Stefano; VANALI, Marcello (Elsevier BV, 2021-08)One way to enhance the performance of vibration control with piezoelectric shunt is to use a negative capacitance in the shunt circuit. This component is very effective and pro- vides good results in terms of attenuation ...
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Article dans une revue avec comité de lectureBERARDENGO, Marta; THOMAS, Olivier; GIRAUD-AUDINE, Christophe; MANZONI, Stefano (SAGE Publications, 2016)This paper deals with piezoelectric shunt damping enhanced with negative capacitances. A novel electrical circuit layout is addressed, based on the use of two negative capacitances. It is shown that the shunt performances, ...
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