Experiment designs to minimize input peak and crest factor in MIMO system identification

A4 Konferenspublikationer


Interna författare/redaktörer


Publikationens författare: Kurt E. Häggblom
Förlagsort: Piscataway, NJ
Publiceringsår: 2019
Förläggare: IEEE
Moderpublikationens namn: IEEE CCTA 2019 : 3rd IEEE conference on control technology and applications : August 19-21, 2019, City University of Hong Kong, Hong Kong, China
Artikelns första sida, sidnummer: 499
Artikelns sista sida, sidnummer: 504
ISBN: 978-1-7281-2767-5


Abstrakt

The quality of the data for system identification is of utmost of importance. Ideally, the output data should satisfy requirements regarding variance, and in the case of multiple-input multiple-output (MIMO) systems, correlation between the outputs. Usually, it is desired to achieve this by input perturbations with peak values as small as possible. A related measure is the crest factor, which is a measure of the (inverse) power of an input perturbation with given peak value. In this paper, the effect of minimizing the input peak and the crest factor, subject to desired output variances/covariances, is studied for various types of perturbation signals. The design procedure is completely data based; data are obtained by one or more preliminary experiments with the system to be identified. A model of an ill-conditioned distillation column is used for illustration.


Nyckelord

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


Dokument


Senast uppdaterad 2020-28-02 vid 05:40