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Event-triggered control subject to actuator saturation
KTH, School of Electrical Engineering (EES), Automatic Control.
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Event-triggered control is a recent approach in control theory which aims

at reducing the communication load in networked control systems by adapting the

communication among the components to the current needs. In more detail, the

information exchange over the feedback link only takes place if certain event conditions,

that guarantee a desired control performance, are satisfied. This thesis analyzes the

consequences of actuator saturation on the stability of the event-triggered control

loop. Based on linear matrix inequalities, stability criteria have been derived which

can be used to determine regions in the state space that guarantee a stable behavior.

Furthermore, the existence of a lower bound on the minimum inter-event time is shown.

Due to integrator windup, actuator saturation may severely degrade the performance

of the event-triggered closed-loop system. In order to overcome this problem, the

stability criteria have been extended by incorporating a static anti-windup structure.

Finally, the effects of transmission delays in the feedback link are analyzed and a

procedure to deal with their consequences is proposed. The results are illustrated by

simulations and by experiments with a wirelessly controlled first-order tank system.

Place, publisher, year, edition, pages
2012. , 87 p.
EES Examensarbete / Master Thesis, XR-EE-RT 2012:009
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-98840OAI: diva2:539438
Available from: 2012-07-06 Created: 2012-07-03 Last updated: 2012-07-06Bibliographically approved

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