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On Rational State Space Realizations
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
1992 (English)In: Proceedings of the 2nd IFAC Symposium on Nonlinear Control Systems Design, 1992, 197-202 p.Conference paper (Refereed)
Abstract [en]

It is investigated when a polynomial inputoutput differential equation can be realized in rational, explicit state space form, i.e. so that all components of the right hand side are rational functions of the states. In the case where there are no inputs the problem is showed to be equivalent to a famous problem in algebraic geometry, which is solved only in various special cases. For systems with inputs the problem is more complicated, as is the discrete time case. An interpretation of the Luroth problem in terms of observability is made.

Place, publisher, year, edition, pages
1992. 197-202 p.
Keyword [en]
Realization theory, Polynomial systems, Algebraic observability, Algebraic geometry, Rational variables
National Category
Control Engineering
URN: urn:nbn:se:liu:diva-91674ISBN: 978-0080419015OAI: diva2:618466
2nd IFAC Symposium on Nonlinear Control Systems Design, Bordeaux, France, June, 1992
Available from: 2013-04-28 Created: 2013-04-28 Last updated: 2013-07-29

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