Control of Piezoelectric Benders Using a Charge Drive
S.A. Rios, A.J. Fleming
The University of Newcastle, Newcastle, Australia
This article describes the use of a charge amplifier to improve the linearity of a piezoelectric bender. Existing charge drive circuits can not be directly applied to bimorph piezoelectric benders since they share a common electrode. In this article a new charge drive circuit and electrical configuration is described that allows piezoelectric bimorphs to be linearised with charge. Experimental results demonstrate that the use of a charge source reduces hysteresis from 16.56% to 0.26%.
ACTUATOR 2014 Manuscript B3.3
Publication date: 08/04/2015
Manuscript B3.3 published in Conference Proceedings ACTUATOR 2014
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