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Adaptive amplitude fast proportional integral phasor extremum seeking control for a class of nonlinear system
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-9901-5776
Department of Chemical Engineering, Queens University, Kingston, ON K7L 3N6, Canada.
2019 (English)In: Journal of Process Control, ISSN 0959-1524, E-ISSN 1873-2771Article in journal (Refereed) In press
Abstract [en]

In this paper, we present a modification of the fast phasor extremum-seeking control for the fast optimization of a class of Wiener-Hammerstein nonlinear dynamical systems. The proposed technique provides a significant improvement of the closed-loop system's performance. This study introduces a new adaptive amplitude technique that is used to adaptively adjust the perturbation amplitude to a small predetermined value in a neighbourhood of the system's unknown optimal equilibrium. An analysis of the system demonstrates that semi-global practical stability analysis of the overall system to the unknown optimum is achieved. The effectiveness of the proposed approach is illustrated using numerical examples. The approach is also implemented for the optimal operation of a lean burn combustion system.

Place, publisher, year, edition, pages
2019.
Keywords [en]
Fast extremum-seeking control, Stability analysis, Wiener-Hammerstein system
National Category
Control Engineering
Research subject
Control Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-73304DOI: 10.1016/j.jprocont.2018.10.006OAI: oai:DiVA.org:ltu-73304DiVA, id: diva2:1298879
Available from: 2019-03-25 Created: 2019-03-25 Last updated: 2019-09-13

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Atta, Khalid

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