Structure Discrimination in Block-Oriented Models Using Linear Approximations: A Theoretic Framework
Systems and Control
2018-04-26 v1
Abstract
In this paper we show that it is possible to retrieve structural information about complex block-oriented nonlinear systems, starting from linear approximations of the nonlinear system around different setpoints.The key idea is to monitor the movements of the poles and zeros of the linearized models and to reduce the number of candidate models on the basis of these observations. Besides the well known open loop single branch Wiener-, Hammerstein-, and Wiener-Hammerstein systems, we also cover a number of more general structures like parallel (multi branch) Wiener-Hammerstein models, and closed loop block oriented models, including linear fractional representation (LFR) models.
Cite
@article{arxiv.1804.09648,
title = {Structure Discrimination in Block-Oriented Models Using Linear Approximations: A Theoretic Framework},
author = {Johan Schoukens and Rik Pintelon and Yves Rolain and Maarten Schoukens and Koen Tiels and Laurent Vanbeylen and Anne Van Mulders and Gerd Vandersteen},
journal= {arXiv preprint arXiv:1804.09648},
year = {2018}
}