Data-Based Settling-Time Optimization for Linear Feedback Control Systems Using Global Extremum Seeking

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Abstract

High-performance control designs are indispensable in high-end industrial applications. At the same time, tuning a controller for optimal performance only on the basis of model knowledge is generally hampered by model uncertainty, unknown disturbances, and variation in the dynamics between systems of the same make due to manufacturing tolerances. Data-driven control methods facilitate system-specific controller tuning in an automated fashion while taking these aspects into account through measured performance data. This article presents a data-based extremum-seeking approach for the optimization of transient system performance in terms of settling time. A novel cascaded global optimization approach tackles the problem that the settling time depends discontinuously on controller parameters. In addition, it ensures that the resulting controller designs have guaranteed closed-loop stability and robustness margins. The effectiveness of the proposed approach in optimizing transient system behavior is shown experimentally in an industrial case study on a wire bonder system. Herein, it is also shown how to achieve improved performance uniformly over a range of setpoint designs and for position-dependent dynamics.
Original languageEnglish
Article number10720184
Pages (from-to)343-353
Number of pages11
JournalIEEE Transactions on Control Systems Technology
Volume33
Issue number1
Early online date16 Oct 2024
DOIs
Publication statusPublished - Jan 2025

Funding

Received 26 July 2024; accepted 23 September 2024. This publication is part of the project Digital Twin with project number P18-03 of the research program TTW Perspective which is (partly) financed by the Dutch Research Council (NWO). Recommended by Associate Editor V. Adetola. (Corresponding author: Wouter Weekers.) Wouter Weekers, Alessandro Saccon, and Nathan van de Wouw are with the Department of Mechanical Engineering, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands (e-mail: [email protected]; [email protected]; [email protected]).

FundersFunder number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek

    Keywords

    • Data-driven control
    • extremum-seeking control (ESC)
    • feedback control
    • settling time
    • transient performance

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