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Hysteresis Modeling and Parameter Identification of an Encapsulated Piezoelectric Actuator

[+] Author Affiliations
Yang Zhang, Zhaobo Chen, Yinghou Jiao, Yuan Wei

Harbin Institute of Technology, Harbin, China

Paper No. IMECE2015-51360, pp. V04BT04A046; 7 pages
doi:10.1115/IMECE2015-51360
From:
  • ASME 2015 International Mechanical Engineering Congress and Exposition
  • Volume 4B: Dynamics, Vibration, and Control
  • Houston, Texas, USA, November 13–19, 2015
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5740-3
  • Copyright © 2015 by ASME

abstract

The hysteresis of the piezoelectric actuator possesses the rate-dependent characteristics, which significantly affects the precision and response speed of the piezoelectric actuators. That challenges to the traditional modeling and control techniques in micro-/nano-manipulation. The static and dynamic experiments are performed to validate the rates-dependent characteristics of our proposed encapsulated piezoelectric actuator, including the preload-dependent, frequency-dependent and amplitude-dependent characteristics. In order to accurately predict the EPA output hysteresis displacement with respect to the driving voltage, the Bouc-Wen model is proposed. The corresponding parameter identification method is established to identify the parameters of the proposed Bouc-wen model. To evaluate the effectiveness of the proposed model and parameter identification method, the experimental system is implemented. The results indicate that the output displacement predicted by proposed Bouc-Wen mathematics model can match the measured data very well. The maximal absolute, relative and normalization total errors of the proposed Bouc-wen model are 0.548um, 4.26% and 0.0583 respectively, which shows the proposed Bouc-Wen model can well describe the hysteretic characteristics of the piezoelectric actuator.

Copyright © 2015 by ASME

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