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Creep Phenomenon in a Multiple-Input Single-Output Control System of a Piezoelectric Bimorph Actuator

Author

Listed:
  • Dariusz Grzybek

    (Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland)

  • Andrzej Sioma

    (Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland)

Abstract

This article presents a comparison of the course of a creep phenomenon in the control system of a bimorph actuator, in which control voltages were applied to both piezoelectric layers, with the course of the creep phenomenon in the control system of a unimorph actuator, in which a control voltage was applied to only one piezoelectric layer. The bimorph actuator was built from two layers of piezoelectric composite, macro fiber composite was applied, and a carrier layer made of epoxy laminate was used for production of printed circuit boards. A comparative analysis was carried out on the basis of 22 laboratory experiments in which the vision system was used to measure a displacement change of six points of the bimorph actuator structure. Based on the results of laboratory experiments, it was noted that the duration of a transient part is approximately the same in a system with a control voltage applied to one MFC patch as in a system with control voltages applied to two MFC patches. In the system with control voltages applied to two MFC patches, the position change due to the creep process is more than two times bigger in comparison to the system with the control voltage applied to one MFC patch.

Suggested Citation

  • Dariusz Grzybek & Andrzej Sioma, 2022. "Creep Phenomenon in a Multiple-Input Single-Output Control System of a Piezoelectric Bimorph Actuator," Energies, MDPI, vol. 15(21), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8267-:d:964047
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