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High Bandwidth Control of a Piezoelectric Stage in the Presence of Rate-Dependent Hysteresis

[+] Author Affiliations
Jinhao Chen, Beibei Ren

Texas Tech University, Lubbock, TX

Qing-Chang Zhong

Illinois Institute of Technology, Chicago, IL

Paper No. ISPS2016-9555, pp. V001T03A003; 3 pages
doi:10.1115/ISPS2016-9555
From:
  • ASME 2016 Conference on Information Storage and Processing Systems
  • ASME 2016 Conference on Information Storage and Processing Systems
  • Santa Clara, California, USA, June 20–21, 2016
  • Conference Sponsors: Information Storage and Processing Systems Division
  • ISBN: 978-0-7918-4988-0
  • Copyright © 2016 by ASME

abstract

Piezoelectric nanopositioning actuators are widely employed in many applications, including the hard disk drives [1–3], gyroscopes [4] and the scanning probe microscopes [5]. Besides the precise position control, high-bandwidth tracking control is crucial for the applications of piezoelectric actuators, since, for example, it will allow hard disk drives to meet the demand for higher data storage capacities with lower access times [6]. However, the existence of vibration dynamics, the coupled hysteresis and other uncertainty (e.g. creep) greatly limit the positioning and tracking performance of the piezoelectric actuators over a broad bandwidth. As a solution to tackle this problem and achieve precise control over a broad frequency range, stiffer piezoelectric actuators that have higher resonant frequencies can be employed. In this way, the scan frequency at which the vibration is significant becomes higher, while, as a major disadvantage, the range of motion is reduced [7]. This highly motivates the development of control techniques that enable high-bandwidth nanopositioning of piezoelectric-actuated systems.

Copyright © 2016 by ASME

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