Subspace-based multivariable system identification from frequency response data

Author

McKelvey, Tomas ; Akcay, Hüseyin ; Ljung, Lennart

Author_Institution

Dept. of Electr. Eng., Linkoping Univ., Sweden

Volume

41

Issue

7

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

960

Lastpage

979

Abstract

Two noniterative subspace-based algorithms which identify linear, time-invariant MIMO (multi-input/multioutput) systems from frequency response data are presented. The algorithms are related to the recent time-domain subspace identification techniques. The first algorithm uses equidistantly, in frequency, spaced data and is strongly consistent under weak noise assumptions. The second algorithm uses arbitrary frequency spacing and is strongly consistent under more restrictive noise assumptions, promising results are obtained when the algorithms are applied to real frequency data originating from a large flexible structure

Keywords

MIMO systems; flexible structures; frequency response; identification; linear systems; frequency response data; frequency spacing; large flexible structure; linear time-invariant systems; subspace-based multivariable system identification; time-domain subspace identification techniques; weak noise assumptions; Control system synthesis; Frequency domain analysis; Frequency response; Iterative algorithms; MIMO; Modems; Parametric statistics; Robust control; System identification; Time domain analysis;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/9.508900

Filename

508900