Abstract
Polynomial-based damping techniques such as Positive Position Feedback (PPF) and Positive Velocity and Position Feedback (PVPF) have been applied successfully to a number of lightly damped systems to overcome resonance-induced vibration issues. These control designs exhibit several advantages such as substantial damping performance, relative ease of design and adequate robustness in the presence of plant parameter uncertainties. Their formulation is based on the well-known pole-placement technique where damping is achieved by pushing the poles of the close-loop system arbitrarily away from the jω axis and in to the left-half plane. Current designs result in changing the real part of the poles while keeping the imaginary part unaltered; thus keeping the resonant frequency of the closed-loop, damped system unchanged, compared to the original undamped, open-loop system. In this work, we present a pole-placement technique which results not only in the substantial damping of the resonance but also in shifting the system resonance to a substantially higher frequency. This result is beneficial to a number of systems such as nanopositioners employed in Scanning Probe Microscopes, where maximizing the positioning bandwidth is a major goal and the achievable bandwidth is severely limited by the resonant frequency of the positioner.
Original language | English |
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Title of host publication | 19th IFAC World Congress IFAC 2014 Cape Town, South Africa, 24-29 August 2014 |
Subtitle of host publication | Proceedings |
Editors | Edward Boje, Xiaohua Xia |
Publisher | International Federation of Automatic Control (IFAC) |
Pages | 5890-5895 |
Number of pages | 6 |
Volume | 47 |
ISBN (Electronic) | 978-3-902823-62-5 |
DOIs | |
Publication status | Published - Sept 2014 |
Event | The International Federation of Automatic Control : IFAC World Congress - Cape Town, South Africa Duration: 24 Aug 2014 → 29 Aug 2014 Conference number: 19th https://folk.ntnu.no/skoge/prost/proceedings/ifac2014/proceedings.html#:~:text=The%2019th%20IFAC%20World%20Congress,over%20a%20five%2Dday%20period. |
Publication series
Name | IFAC Proceedings Volumes |
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Publisher | International Federation of Automatic Control (IFAC) |
Number | 3 |
Volume | 47 |
ISSN (Electronic) | 1474-6670 |
Conference
Conference | The International Federation of Automatic Control |
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Country/Territory | South Africa |
City | Cape Town |
Period | 24/08/14 → 29/08/14 |
Internet address |
Keywords
- Micro and Nano Mechatronic Systems
- Vibration Control
- Application of mechatronic principles