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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/918752
- Fast scanning using piezoelectric tube nanopositioners: a negative imaginary approach
Moheimani, S. O. R.
- The University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science
- 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.
- 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
- Institute of Electrical and Electronics Engineers (IEEE)
atomic force microscopy;
scanning tunnelling microscopy
- Resource Type
- conference paper
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