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Extremum seeking control based on phasor estimation
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-9901-5776
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0001-8893-4809
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-0079-9049
2015 (English)In: Systems & control letters (Print), ISSN 0167-6911, E-ISSN 1872-7956, Vol. 85, p. 37-45Article in journal (Refereed) Published
Abstract [en]

We present an extremum seeking control algorithm based on the estimation of the phasor of the perturbation frequency in the output of the plant. The phasor estimator is based on a continuous time Kalman filter, which is reduced into a variable gain observer by explicitly solving the special case of the Riccati equation. Local stability of the proposed al- gorithm for general non-linear dynamic systems using averaging and singular perturbations is presented for the single input case. The advantage of the presented algorithm is that it can be used on plants with large and even variable phase lag.

Place, publisher, year, edition, pages
2015. Vol. 85, p. 37-45
National Category
Control Engineering
Research subject
Control Engineering; Intelligent industrial processes (AERI)
Identifiers
URN: urn:nbn:se:ltu:diva-10781DOI: 10.1016/j.sysconle.2015.08.010ISI: 000364884300006Scopus ID: 2-s2.0-84944041663Local ID: 9a49e75c-e3e9-47ab-8626-7390e4551bd6OAI: oai:DiVA.org:ltu-10781DiVA, id: diva2:983728
Note
Validerad; 2015; Nivå 2; 20150908 (tgu)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Atta, KhalidJohansson, AndreasGustafsson, Thomas

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