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Actuator saturation and anti-windup compensation in event-triggered control
KTH, School of Electrical Engineering (EES), Automatic Control.
KTH, School of Electrical Engineering (EES), Automatic Control.
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9940-5929
2014 (English)In: Discrete event dynamic systems, ISSN 0924-6703, E-ISSN 1573-7594, Vol. 24, no 2, 173-197 p.Article in journal (Refereed) Published
Abstract [en]

Event-triggered control aims at reducing the communication load over the feedback link in networked control systems by sending information only if certain event conditions, which guarantee a desired control performance, are satisfied. This article investigates the consequences of actuator saturation on the behavior of the event-triggered control loop in terms of its stability and information exchange. Stability properties are derived using linear matrix inequalities (LMIs) which show how the stability of the event-triggered control loop depends on the selection of the event threshold. Moreover, it is shown that a lower bound on the minimum inter-event time exists being likewise affected by the event threshold. As actuator saturation might severely degrade the performance of the event-triggered closed-loop system, the scheme is extended by incorporating an anti-windup mechanism in order to overcome this problem. The results are illustrated by simulations and experiments.

Place, publisher, year, edition, pages
Springer Science+Business Media B.V., 2014. Vol. 24, no 2, 173-197 p.
Keyword [en]
Networked control systems, Event-triggered control, Stability, Actuator saturation, Anti-windup compensation, LMIs
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-111439DOI: 10.1007/s10626-012-0151-1ISI: 000335697100005Scopus ID: 2-s2.0-84902388271OAI: oai:DiVA.org:kth-111439DiVA: diva2:586293
Funder
VinnovaKnut and Alice Wallenberg FoundationSwedish Research Council
Note

QC 20130131

Available from: 2013-01-31 Created: 2013-01-11 Last updated: 2017-12-06Bibliographically approved

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Johansson, Karl Henrik

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