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Dynamic quantization of uncertain linear networked control systems
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. Beijing Institute of Technology, China.ORCID iD: 0000-0001-7273-4394
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9940-5929
2015 (English)In: Automatica, ISSN 0005-1098, Vol. 59, 248-255 p.Article in journal (Refereed) Published
Abstract [en]

This paper is concerned with the stability analysis of networked control systems with dynamic quantization, variable sampling intervals and communication delays. A time-triggered zooming algorithm for the dynamic quantization at the sensor side is proposed that leads to an exponentially stable closed-loop system. The algorithm includes proper initialization of the zoom parameter. More precisely, given a bound on the state initial conditions and the values of the quantizer range and error, we derive conditions for finding the initial value of the zoom parameter, starting from which the exponential stability is guaranteed by using "zooming-in" only. Polytopic type uncertainties in the system model can be easily included in the analysis. The efficiency of the method is illustrated on an example of an uncertain cart-pendulum system.

Place, publisher, year, edition, pages
2015. Vol. 59, 248-255 p.
Keyword [en]
Networked control systems, Time-delay systems, Dynamic quantization, Lyapunov-Krasovskii method
National Category
Control Engineering
URN: urn:nbn:se:kth:diva-173138DOI: 10.1016/j.automatica.2015.06.041ISI: 000359028700028ScopusID: 2-s2.0-84937908155OAI: diva2:854960
Knut and Alice Wallenberg Foundation, KAW 2009.088Swedish Research Council, VR 621-2014-6282

QC 20150918

Available from: 2015-09-18 Created: 2015-09-07 Last updated: 2015-09-18Bibliographically approved

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Liu, KunJohansson, Karl Henrik
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