A new hybrid method for sensorless control of piezoelectric actuators

Mohsen Bazghaleh, Morteza Mohammadzaheri*, Steven Grainger, Ben Cazzolato, Tien-Fu Lu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


This paper offers a new hybrid position estimation method for the sensorless control of piezoelectric actuators. Often mathematical models which map easy to measure signals to displacement are used in this role. The proposed method is aimed at enhancing the accuracy of commonly accepted black box models. Three easy to measure signals are available to be used to estimate displacement. One, the induced voltage, is not suitable for piezoelectric stacks. Two others are more generally usable: the piezoelectric voltage and the sensing voltage. This paper proposes, then theoretically and experimentally verifies a hybrid algorithm that uses the two latter signals to produce estimates of displacement with improved accuracy.

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalSensors and Actuators A: Physical
Publication statusPublished - 1 May 2013


  • Black box
  • Displacement estimation
  • Fuzzy
  • Piezoelectric actuators
  • Sensorless control

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering


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