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Performance of Subspace based State-Space System Identification Methods
Chalmers Institute of Technology, Sweden.
Royal Institute of Technology, Sweden.
Royal Institute of Technology, Sweden.
Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0003-4881-8955
1993 (engelsk)Inngår i: Proceedings of the 12th IFAC World Congress, 1993, s. 369-Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Traditional prediction-error techniques for multivariable system identification require canonical descriptions using a large number of parameters. This problem can be avoided using subspace based methods, since these estimate a state-space model directly from the data. The main computations consist of a QR-decomposition and a singular-value decomposition. Herein, a subspace based technique for identifying general finite-dimensional linear systems is presented and analyzed. The technique applies to general noise covariance structures. Explicit formulas for the asymptotic pole estimation error variances are given. The proposed method is found to perform comparable to a prediction error method in a simple example.

sted, utgiver, år, opplag, sider
1993. s. 369-
Emneord [en]
Linear systems, System identification, Instrumental variable methods
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-94099ISBN: 978-008042212 (tryckt)OAI: oai:DiVA.org:liu-94099DiVA, id: diva2:629513
Konferanse
12th IFAC World Congress, Sydney Australia, July, 1993
Tilgjengelig fra: 2013-06-17 Laget: 2013-06-16 Sist oppdatert: 2024-01-08

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