A digital charge amplifier for hysteresis elimination in piezoelectric actuators

M. Bazghaleh, S. Grainger, M. Mohammadzaheri, B. Cazzolato, T. F. Lu

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Piezoelectric actuators are commonly used for nanopositioning due to their high resolution, low power consumption and wide operating frequency, but they suffer hysteresis, which affects linearity. In this paper, a novel digital charge amplifier is presented. Results show that hysteresis is reduced by 91% compared with a voltage amplifier, but over long operational periods the digital charge amplifier approach suffers displacement drift. A non-linear ARX model with long-term accuracy is used with a data fusion algorithm to remove the drift. Experimental results are presented.

Original languageEnglish
Article number075016
JournalSmart Materials and Structures
Volume22
Issue number7
DOIs
Publication statusPublished - Jul 2013

Fingerprint

piezoelectric actuators
Piezoelectric actuators
Hysteresis
elimination
amplifiers
hysteresis
voltage amplifiers
multisensor fusion
Data fusion
linearity
Electric power utilization
high resolution
Electric potential

ASJC Scopus subject areas

  • Signal Processing
  • Atomic and Molecular Physics, and Optics
  • Civil and Structural Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

Cite this

A digital charge amplifier for hysteresis elimination in piezoelectric actuators. / Bazghaleh, M.; Grainger, S.; Mohammadzaheri, M.; Cazzolato, B.; Lu, T. F.

In: Smart Materials and Structures, Vol. 22, No. 7, 075016, 07.2013.

Research output: Contribution to journalArticle

Bazghaleh, M. ; Grainger, S. ; Mohammadzaheri, M. ; Cazzolato, B. ; Lu, T. F. / A digital charge amplifier for hysteresis elimination in piezoelectric actuators. In: Smart Materials and Structures. 2013 ; Vol. 22, No. 7.
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