Hysteresis and vibration compensation in piezoelectric actuators by integrating charge control and inverse feedforward

G. M. Clayton, S. Tien, A. J. Fleming, S. O.R. Moheimani, S. Devasia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

In this paper we address the problems of hysteresis and vibrations that limit the accuracy of piezoelectric positioners. It is widely known that the use of charge control significantly reduces hysteresis, thus enabling high-accuracy positioning during low speed operations. However, charge control is unable to reduce vibrations that limit the positioning bandwidth. Our main contribution is to overcome this bandwidth limitation by augmenting charge control with inverse feedforward to compensate for vibrations, resulting in a high-bandwidth, high-accuracy positioning system. We apply this integrated method to a piezoelectric tube actuator and experimental results are presented to illustrate the positioning improvements with the proposed integrated approach.

Original languageEnglish
Title of host publication4th IFAC Symposium on Mechatronic Systems, MX 2006
PublisherIFAC Secretariat
Pages812-818
Number of pages7
EditionPART 1
ISBN (Print)9783902661173
DOIs
Publication statusPublished - 2006

Publication series

NameIFAC Proceedings Volumes (IFAC-PapersOnline)
NumberPART 1
Volume4
ISSN (Print)1474-6670

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

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