Phasor extremum seeking control with adaptive perturbation amplitude

Khalid Tourkey Atta, Roland Hostettler, Wolfgang Birk, Andreas Johansson

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

6 Citations (Scopus)
114 Downloads (Pure)


In this paper, we propose a perturbation amplitude adaption scheme for phasor extremum seeking control based on the plant's estimated gradient. By using phasor extremum seeking instead of classical extremum seeking, the problem of algebraic loops in the controller formulation is avoided. Furthermore, a stability analysis for the proposed method is provided, which is the first stability analysis for extremum seeking controllers using adaptive amplitudes. The proposed method is illustrated using numerical examples and it is found that changes in optimum can be tracked accurately while the steady-state perturbations can be reduced significantly.

Original languageEnglish
Title of host publication2016 IEEE 55th Conference on Decision and Control (CDC)
Number of pages6
ISBN (Electronic)978-1-5090-1837-6
Publication statusPublished - 27 Dec 2016
MoE publication typeA4 Article in a conference publication
EventIEEE Conference on Decision and Control - ARIA Resort & Casino, Las Vegas, United States
Duration: 12 Dec 201614 Dec 2016
Conference number: 55

Publication series

NameProceedings of the IEEE Conference on Decision & Control
ISSN (Print)0743-1546


ConferenceIEEE Conference on Decision and Control
Abbreviated titleCDC
CountryUnited States
CityLas Vegas

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