A variance reduction technique for identification in dynamic networks

Bilal Gunes, Arne Dankers, Paul M J Van Den Hof

    Research output: Contribution to journalConference articleScientificpeer-review

    13 Citations (Scopus)
    18 Downloads (Pure)

    Abstract

    With advancing technology, systems are becoming increasingly interconnected and form more complex networks. Additionally, more measurements are available from systems due to cheaper sensors. Hence there is a need for identification methods specifically designed for networks. For dynamic networks with known interconnection structures, several methods have been proposed for obtaining consistent estimates. We suppose that the internal variables in the network are measured with noise, but that there are external reference signals present in the network that are known exactly. A method that is able to deal with this situation is the two stage method, which solves several open loop identification problems sequentially. In this paper it is shown that solving the problems simultaneously leads to estimates with lower variance.

    Original languageEnglish
    Pages (from-to)2842-2847
    JournalIFAC Proceedings Volume
    Volume47
    Issue number3
    DOIs
    Publication statusPublished - 2014
    Event19th IFAC World Congress on International Federation of Automatic Control, IFAC 2014 - Pretoria, Cape Town, South Africa
    Duration: 24 Aug 201429 Aug 2014
    Conference number: 19

    Keywords

    • Dynamic networks
    • Linear systems
    • System identification
    • Variance

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