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

Autor: Lieve Lauwers, Johan Schoukens, Rik Pintelon, Georges Harnack
Přispěvatelé: Electricity
Rok vydání: 2009
Předmět:
Zdroj: Vrije Universiteit Brussel
ISSN: 1474-6670
DOI: 10.3182/20090706-3-fr-2004.00054
Popis: 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.
Databáze: OpenAIRE