Actuator saturation and anti-windup compensation in event-triggered control
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
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.
Networked control systems, Event-triggered control, Stability, Actuator saturation, Anti-windup compensation, LMIs
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-111439DOI: 10.1007/s10626-012-0151-1ISI: 000335697100005ScopusID: 2-s2.0-84902388271OAI: oai:DiVA.org:kth-111439DiVA: diva2:586293
FunderVinnovaKnut and Alice Wallenberg FoundationSwedish Research Council
QC 201301312013-01-312013-01-112014-06-09Bibliographically approved