- Title
- Fast scanning using piezoelectric tube nanopositioners: a negative imaginary approach
- Creator
- Bhikkaji, B.; Moheimani, S. O. R.
- Relation
- 2009 IEEE/ASME International Conference on Advanced Intelligent Mechatronics. Proceedings of the IEEE/ASME International Conference on Advanced Intelligent Mechatronics 2009 (Singapore 14-17 July, 2009) p. 274-279
- Publisher Link
- http://dx.doi.org/10.1109/AIM.2009.5230001
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2009
- Description
- Most commercially available Atomic Force Microscopes (AFMs) use piezoelectric tube nano-positioners for scanning. Current scanning frequencies are less than 0.01fr, where fr is the frequency of the first resonant mode of the piezoelectric tube used. An improvement in the scanning rates without losing the nano-scale precision is desired. Here, a prototype of the scanning unit of an AFM is considered. The dynamics of the piezo tube, used in the prototype, is approximated by a model that satisfies the negative imaginary property. The resonant mode that hampers the fast scanning is identified from the model and damped using a feedback control technique known as the Integral Resonant Control (IRC). The piezoelectric tube is then actuated to have fast and accurate scans.
- Subject
- atomic force microscopy; feedback; piezoelectric devices; scanning tunnelling microscopy
- Identifier
- uon:8696
- Identifier
- http://hdl.handle.net/1959.13/918752
- Identifier
- ISBN:9781424428526
- Rights
- Copyright © 2009 IEEE. Reprinted from the Proceedings of the IEEE/ASME International Conference on Advanced Intelligent Mechatronics 2009. 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 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.
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