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Self-Triggered and Event-Triggered Set-Valued Observers
Silvestre, Daniel; Rosa, Paulo; Hespanha, Joao P.; Silvestre, Carlos
2018-02
Source PublicationINFORMATION SCIENCES
ISSN0020-0255
Volume426Pages:61-86
AbstractThis paper addresses the problem of reducing the required network load and computational power for the implementation of Set-Valued Observers (SVOs) in Networked Control System (NCS). Event- and self-triggered strategies for NCS, modeled as discrete-time Linear Parameter-Varying (LPV) systems, are studied by showing how the triggering condition can be selected. The methodology provided can be applied to determine when it is required to perform a full ("classical") computation of the SVOs, while providing low-complexity state overbounds for the remaining time, at the expenses of temporarily reducing the estimation accuracy. As part of the procedure, an algorithm is provided to compute a suitable centrally symmetric polytope that allows to find hyper-parallelepiped and ellipsoidal over bounds to the exact set-valued state estimates calculated by the SVOs. By construction, the proposed triggering techniques do not influence the convergence of the SVOs, as at some subsequent time instants, set-valued estimates are computed using the conventional SVOs. Results are provided for the triggering frequency of the self-triggered strategy and two interesting cases: distributed systems when the dynamics of all nodes are equal up to a reordering of the matrix; and when the probability distribution of the parameters influencing the dynamics is known. The performance of the proposed algorithm is demonstrated in simulation by using a time-sensitive example. (C) 2017 Elsevier Inc. All rights reserved.
KeywordState estimation Fault detection Self-triggered Networked control systems
DOI10.1016/j.ins.2017.10.029
URLView the original
Indexed BySCI
Language英语
WOS Research AreaComputer Science
WOS SubjectComputer Science, Information Systems
WOS IDWOS:000415775000005
PublisherELSEVIER SCIENCE INC
The Source to ArticleWOS
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Citation statistics
Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Silvestre, Daniel,Rosa, Paulo,Hespanha, Joao P.,et al. Self-Triggered and Event-Triggered Set-Valued Observers[J]. INFORMATION SCIENCES,2018,426:61-86.
APA Silvestre, Daniel,Rosa, Paulo,Hespanha, Joao P.,&Silvestre, Carlos.(2018).Self-Triggered and Event-Triggered Set-Valued Observers.INFORMATION SCIENCES,426,61-86.
MLA Silvestre, Daniel,et al."Self-Triggered and Event-Triggered Set-Valued Observers".INFORMATION SCIENCES 426(2018):61-86.
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