Self-tuned driving of piezoelectric actuators. The case of ultrasonic motors

Jose L Pons*, P. Ochoa, M. Villegas, J. F. Fernández, E. Rocon, J. Moreno

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

A number of piezoelectric devices with wide applicability in industrial and technological areas, i.e. ultrasonic motors and piezoelectric transformers, are based on piezoelectric resonators. Piezoelectric resonators are electromechanical structures for which the operation point is close to resonance. This operation point must be kept close to resonance regardless of external perturbations. This paper introduces the mechatronic design of control electronic circuits for piezoelectric resonators. The design approach has been experimentally validated on ultrasonic motors. The paper analyzes the specification of optimal driving signals, the digital electronic generation of such signals and the self-tuning characteristics of these electronic drivers based on feedback loops.

Original languageEnglish (US)
Pages (from-to)4163-4167
Number of pages5
JournalJournal of the European Ceramic Society
Volume27
Issue number13-15
DOIs
StatePublished - 2007

Keywords

  • Actuators
  • PZT
  • Piezoelectric properties
  • Ultrasonic motors

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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