Reference-dependent variable-gain control for a nano-positioning motion system**This research is financially supported by the Dutch Technology Foundation (STW) under the project 'HyperMotion: Hybrid Control for Performance Improvement of Linear Motion Systems' (no. 10953)
| Autor: | van de N Nathan Wouw, Bgb Bram Hunnekens, Wpmh Maurice Heemels, van Sjlm Bas Loon, AS Andrei Simon |
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| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Engineering Variables business.industry media_common.quotation_subject 020208 electrical & electronic engineering Bandwidth (signal processing) Open-loop controller Control engineering 02 engineering and technology Improved performance 020901 industrial engineering & automation Control and Systems Engineering Control theory Nano 0202 electrical engineering electronic engineering information engineering Automatic gain control business Linear filter media_common Motion system |
| Zdroj: | IFAC-PapersOnLine. 49:70-75 |
| ISSN: | 2405-8963 |
| DOI: | 10.1016/j.ifacol.2016.07.929 |
| Popis: | In this paper, we develop a variable-gain (VG) control strategy that allows for a reference-dependent ‘bandwidth’ of the feedback controller. The proposed controller architecture can achieve improved performance given time-varying, reference-dependent performance requirements compared to linear time-invariant control, which suffers from design trade-offs between low-frequency tracking performance and sensitivity to higher-frequency disturbances. The VG controller consists of frequency-domain loop-shaped linear filters and a VG element. The gain of this element depends on reference information and determines the desired reference-dependent bandwidth of the resulting controller. We present data-based frequency-domain conditions to verify stability and convergence of the closed-loop system. The complete controller design process and the ability of the ‘bandwidth-on-demand’ controller to outperform linear time-invariant controllers are illustrated through experiments on an industrial nano-positioning motion system. |
| Databáze: | OpenAIRE |
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