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Content Provider | IEEE Xplore Digital Library |
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Author | Merry, R. Uyanik, M. van de Molengraft, R. Steinbuch, M. Koops, R. van Veghel, M. |
Copyright Year | 2009 |
Description | Author affiliation: NMi van Swinden Laboratorium, Department of Length, Thijsseweg 11, 2629 JA Delft, The Netherlands (Koops, R.; van Veghel, M.) || Eindhoven University of Technology, Department of Mechanical Engineering, Control Systems Technology group, PO Box 513, 5600 MB, The Netherlands (Merry, R.; Uyanik, M.; van de Molengraft, R.; Steinbuch, M.) |
Abstract | The manipulation of samples in atomic force microscopes (AFMs) is often performed using piezoelectric actuators. In this paper, a metrological AFM with a 3 degree-of-freedom (DOF) stage driven by piezo-stack actuators is considered. The piezo actuators exhibit hysteresis, which can change the system dynamics and/or acts as a non-linear disturbance on the system. This deteriorates the performance of the AFM. The 3 DOF stage exhibits asymmetric hysteresis, which is modeled by extending the Coleman-Hodgdon model. The asymmetry includes a scan range dependent offset and an asymmetry between the trace and retrace directions. Non-linear multi-variable optimization is employed to derive the optimal generic model for all scan ranges. The proposed extended Coleman-Hodgdon model describes the asymmetric hysteresis over all scan ranges with an accuracy of 97%. Based on the model, a feedforward compensation method is developed. Experiments on the metrological AFM show that the application of the hysteresis feedforward largely improves the scanning accuracy. |
Starting Page | 967 |
Ending Page | 972 |
File Size | 853295 |
Page Count | 6 |
File Format | |
ISBN | 9781424445233 |
ISSN | 07431619 |
DOI | 10.1109/ACC.2009.5160007 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2009-06-10 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | American Automatic Control Council(AACC) |
Subject Keyword | Hysteresis Atomic force microscopy Piezoelectric actuators Probes Creep Force control Atomic measurements Mechanical engineering Control system synthesis Nonlinear dynamical systems |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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