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Proceedings Paper

Charge-driven piezoelectric transducers in self-sensing configuration
Author(s): Andrea Tonoli; Stefano Oliva; Stefano Carabelli; Pierluigi Civera
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Paper Abstract

The aim of the present paper is to illustrate the configuration and the performances of a charge feedback amplifier to drive a piezoelectric transducer in self-sensing operation, i.e. to use the same transducer as sensor and actuator at the same time. A suitable balancing procedure of the self-sensing circuit allows to obtain an output signal proportional to the displacement of the mechanical structure. Experimental tests show that the proposed charge feedback amplifier simplifies the balancing procedures needed to obtain a useful output signal from the self-sensing readout circuit, this is attributed to the increased stability of the electric parameters of the piezoelectric that can be achieved with charge control.

Paper Details

Date Published: 16 August 2001
PDF: 10 pages
Proc. SPIE 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems, (16 August 2001); doi: 10.1117/12.436581
Show Author Affiliations
Andrea Tonoli, Politecnico di Torino (Italy)
Stefano Oliva, Politecnico di Torino (Spain)
Stefano Carabelli, Politecnico di Torino (Italy)
Pierluigi Civera, Politecnico di Torino (Italy)

Published in SPIE Proceedings Vol. 4327:
Smart Structures and Materials 2001: Smart Structures and Integrated Systems
L. Porter Davis, Editor(s)

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