Charge drive with active DC stabilization for linearization of piezoelectric hysteresis

Title: Charge drive with active DC stabilization for linearization of piezoelectric hysteresis
Creator: Fleming, Andrew J.
Relation: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequncy Control Vol. 60, Issue 8, p. 1630-1637
Publisher Link: http://dx.doi.org/10.1109/TUFFC.2013.2745
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Resource Type: journal article
Date: 2013
Description: Charge drive circuits can significantly reduce piezoelectric nonlinearity; however, they are rarely used in practice because of their limited low-frequency performance, their dependence of voltage gain on the load capacitance, and their requirement for time-consuming tuning procedures. In this report, a new charge drive circuit is proposed that uses a controlled current source with voltage feedback to stabilize the low-frequency behavior. This approach eliminates many of the present difficulties and allows extremely low transition frequencies without a long transient response. Experimental results demonstrate that the proposed charge amplifier can effectively reduce piezoelectric hysteresis and creep to less than 1.3% at scan-rates of 10, 1, and 0.1 Hz.
Subject: capacitance; creep; dielectric hysteresis; piezoelectric actuators; piezoelectricity
Identifier: http://hdl.handle.net/1959.13/1299485
Identifier: uon:19888
Identifier: ISSN:0885-3010
Language: eng
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