Identification of Nonlinear Feedback Systems Using a Structured Polynomial Nonlinear State Space Model

Georges Harnack, Lieve Lauwers, Rik Pintelon, Joannes Schoukens

Research output: Chapter in Book/Report/Conference proceedingConference paper

1 Citation (Scopus)

Abstract

In this paper, we propose an identification procedure for nonlinear feedback systems by introducing a new type of model structure. The idea is to combine the advantages of two different model structures: the Polynomial NonLinear State Space (PNLSS) model and the block-structured feedback model. By imposing structural information to the existing PNLSS model, we obtain a flexible model with a lower number of parameters compared with the unconstrained structure. The structured-PNLSS model consists of a linear block in the feedforward path and a PNLSS block in the feedback path. The presented identification procedure for the structured-PNLSS model is applied to input/output measurements of a nonlinear device.
Original languageEnglish
Title of host publication15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France
Pages332-337
Number of pages6
Publication statusPublished - 6 Jul 2009
EventFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet - Stockholm, Sweden
Duration: 21 Sep 200925 Sep 2009

Conference

ConferenceFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet
Country/TerritorySweden
CityStockholm
Period21/09/0925/09/09

Keywords

  • System Identification
  • Nonlinear Systems
  • Feedback Systems
  • Nonlinear State Space Models

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