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Compensation of Hystetresis Nonlinearties in Smart Actuators

[+] Author Affiliations
Mohammad Al Janaideh, Subash Rkaheja, Chun-Yi Su

Concordia University, Montréal, Québec, Canada

Paper No. SMASIS2008-486, pp. 379-386; 8 pages
doi:10.1115/SMASIS2008-486
From:
  • ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2
  • Ellicott City, Maryland, USA, October 28–30, 2008
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-4332-1 | eISBN: 978-0-7918-3839-6
  • Copyright © 2008 by ASME

abstract

Smart actuators such shape memory alloy (SMA) actuators and piezoceramic actuators exhibit different hysteresis loops. In this paper, a generalized Prandtl-Ishlinskii model is utilized for modeling and compensation of hysteresis effects in smart actuators. In the formulated model, a generalized play operator together with a density is integrated to form the generalized Prandtl-Ishlinskii model. The capability of the formulated model to characterize hysteresis in smart actuators is demonstrated by comparing its outputs with experimental results obtained from different smart actuators. Furthermore, an analytical inverse of the generalized Prandtl-Ishlinskii model is derived for compensations in different smart actuators. Such compensation is experimentally illustrated by piezoceramic actuator.

Copyright © 2008 by ASME
Topics: Actuators

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