- Title
- High-performance control of piezoelectric tube scanners
- Creator
- Bhikkaji, B.; Ratnam, M.; Moheimani, S. O. Reza
- Relation
- IEEE Transactions on Control Systems Technology Vol. 15, Issue 5, p. 853-866
- Publisher Link
- http://dx.doi.org/10.1109/TCST.2007.902947
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2007
- Description
- In this paper, a piezoelectric tube of the type typically used in scanning tunneling microscopes (STMs) and atomic force microscopes (AFMs) is considered. Actuation of this piezoelectric tube is hampered by the presence of a lightly damped low-frequency resonant mode. The resonant mode is identified and damped using a positive velocity and position feedback (PVPF) controller, a control technique proposed in this paper. Input signals are then shaped such that the closed-loop system tracks a raster pattern. Normally, piezoelectric tubes are actuated using voltage amplifiers. Nonlinearity in the form of hysteresis is observed when actuating the piezoelectric tubes at high amplitudes using voltage amplifiers. It has been known for some time that hysteresis in piezoelectric actuators can be largely compensated by actuating them using charge amplifiers. In this paper, high-amplitude actuation of a piezoelectric tube is achieved using a charge amplifier.
- Subject
- charge amplifiers; damping; feedback control; hysteresis; piezoelectric tube; raster pattern; resonant mode; system identification
- Identifier
- http://hdl.handle.net/1959.13/29647
- Identifier
- uon:2598
- Identifier
- ISSN:1558-0865
- Rights
- Copyright © 2007 IEEE. Reprinted from IEEE Transactions on Control Systems Technology, 853-866. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Newcastle's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
- Language
- eng
- Full Text
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