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Distributed event-triggered estimation in networked systems
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Automatic Control)
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Automatic Control)
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Automatic Control)ORCID iD: 0000-0001-9940-5929
2012 (English)In: IFAC Proceedings Volumes (IFAC-PapersOnline), IFAC , 2012, 178-185 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper examines distributed event-triggered estimation over wireless sensor networks. In such systems an efficient utilization of the wireless communications must be performed since energy consumption and communication bandwidth are limit resources. We pose a global event-triggered communication policy for state estimation that minimizes a weighted function of the network energy consumption and the number of transmissions subject to constraints on the estimator performance. The global communication policy determines when sensors transmit measurements to the central estimator using a sensor-to-estimator communication channel as well as when sensors received other sensors' measurements (which have been transmitted to the central estimator) using a estimator-to-sensor communication channel. A distributed 1-step greedy heuristic is introduced for the proposed global minimization problem such that sensors determine their respective communication policies using only the local information available at each sensor. Simulation results demonstrate that the number of sensor transmissions can be reduced at a potential increase in network energy consumption (number of sensor transmission and receptions) with the added benefit of reducing network congestion.

Place, publisher, year, edition, pages
IFAC , 2012. 178-185 p.
Series
IFAC Proceedings Volumes (IFAC-PapersOnline), ISSN 1474-6670
Keyword [en]
Distributed event-triggered, Networked systems, State estimation
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-90300DOI: 10.3182/20120606-3-NL-3011.00029Scopus ID: 2-s2.0-84866056371ISBN: 978-390282300-7 (print)OAI: oai:DiVA.org:kth-90300DiVA: diva2:504852
Conference
4th IFAC Conference on Analysis and Design of Hybrid Systems, ADHS'12; Eindhoven; 6 June 2012 through 8 June 2012
Funder
ICT - The Next Generation
Note

QC 20121018

Available from: 2012-02-22 Created: 2012-02-22 Last updated: 2013-04-15Bibliographically approved

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Johansson, Karl Henrik

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  • apa
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Output format
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