Improved design of experiments for identification of MIMO systems

    Forskningsoutput: Kapitel i bok/konferenshandlingKonferensbidragVetenskapligPeer review

    Sammanfattning

    A problem in the identification of MIMO systems is that the system outputs in an identification experiment may be strongly correlated if the inputs are perturbed by uncorrelated signals, as is standard practice. Such a correlation reduces identifiability.A set of methods to design input perturbations that minimize the sample correlation between the outputs has previously been proposed. These methods require an initial model for the design. In this paper, a data-based design method is proposed. Data are obtained from preliminary experiments with the system to be identified. Besides being preferable from a practical point of view, the data-based approach makes it easier to handle some numerical issues that gave problems in the model-based approach.A design method that minimizes the input or output peak value subject to desired output variances with no output correlation is presented. A model of an ill-conditioned distillation column is used to illustrate the method.

    OriginalspråkOdefinierat/okänt
    Titel på gästpublikation29th European symposium on computer aided process engineering
    RedaktörerAnton A. Kiss, Edwin Zondervan, Richard Lakerveld, Leyla Özkan
    FörlagElsevier
    Sidor781–786
    ISBN (elektroniskt)9780128186350
    ISBN (tryckt)978-0-12-818634-3
    DOI
    StatusPublicerad - 2019
    MoE-publikationstypA4 Artikel i en konferenspublikation
    EvenemangEuropean Symposium on Computer Aided Chemical Engineering - 29th European symposium on computer aided process engineering (ESCAPE-29)
    Varaktighet: 16 jun 201919 jun 2019

    Konferens

    KonferensEuropean Symposium on Computer Aided Chemical Engineering
    Period16/06/1919/06/19

    Nyckelord

    • data-based design
    • experiment design
    • ill-conditioned systems
    • multivariable systems
    • system identification

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