Time and Event-based Sensor Scheduling for Networks with Limited Communication Resources

In this paper, we consider state estimation over a network subject to limited sensor communications. A sensor needs to decide when to send its local state estimate to a remote estimator in order to minimize the average estimation error at the estimator subject to that the total communication time is...

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Bibliographic Details
Published inIFAC Proceedings Volumes Vol. 44; no. 1; pp. 13263 - 13268
Main Authors Shi, Ling, Johansson, Karl Henrik, Qiu, Li
Format Journal Article
LanguageEnglish
Published 01.01.2011
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ISSN1474-6670
DOI10.3182/20110828-6-IT-1002.00958

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Summary:In this paper, we consider state estimation over a network subject to limited sensor communications. A sensor needs to decide when to send its local state estimate to a remote estimator in order to minimize the average estimation error at the estimator subject to that the total communication time is no more than a pre-specified value. We propose a novel sensor schedule that combines conventional time and event-based methods and demonstrate that the estimator performance is improved compared with the optimal time-based schedule and the computation complexity is reduced compared with the optimal event-based schedule. Thus the proposed schedule provides a tradeoff between the two classic approaches.
ISSN:1474-6670
DOI:10.3182/20110828-6-IT-1002.00958