Reaction force estimation of piezoelectric actuator by charge observation

Shinnosuke Yamaoka, Kouhei Ohnishi

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

Abstract

Stacked piezoelectric actuators are suitable for micro manipulation, because they have high resolution and large thrust force. However, thrust force of the actuator contains hysteresis. The hysteresis deteriorates robust control performance and the accuracy of reaction force estimation. Hysteresis compensation methods using models have been proposed, although the accuracy of the model is deteriorated in high-frequency input. Hence, disturbance observer (DOB) and reaction force observer (RFOB) without hysteresis model are proposed in this paper. The RFOB estimates reaction force by observing accumulated charge on the actuator. In order to verify the validity of the proposal, experiments were performed. Experimental results showed that proposed method enabled robust control and reaction force estimation.

Original languageEnglish
Title of host publication2013 IEEE International Conference on Mechatronics, ICM 2013
Pages192-197
Number of pages6
DOIs
Publication statusPublished - 2013 Jul 1
Event2013 IEEE International Conference on Mechatronics, ICM 2013 - Vicenza, Italy
Duration: 2013 Feb 272013 Mar 1

Publication series

Name2013 IEEE International Conference on Mechatronics, ICM 2013

Other

Other2013 IEEE International Conference on Mechatronics, ICM 2013
CountryItaly
CityVicenza
Period13/2/2713/3/1

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

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  • Cite this

    Yamaoka, S., & Ohnishi, K. (2013). Reaction force estimation of piezoelectric actuator by charge observation. In 2013 IEEE International Conference on Mechatronics, ICM 2013 (pp. 192-197). [6518534] (2013 IEEE International Conference on Mechatronics, ICM 2013). https://doi.org/10.1109/ICMECH.2013.6518534