Identifying MIMO Hammerstein systems in the context of subspace model identification methods
作者:
MICHEL VERHAEGEN,
DAVID WESTWICK,
期刊:
International Journal of Control
(Taylor Available online 1996)
卷期:
Volume 63,
issue 2
页码: 331-349
ISSN:0020-7179
年代: 1996
DOI:10.1080/00207179608921846
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
In this paper, we outline the extension of the MOESP family of subspace model identification schemes to the Hammerstein-type of nonlinear system. Two types of identification problem are considered. The first type assumes the (polynomial) structure of the static nonlinearity to be given and the task is to identify both the linear system dynamics and the unknown proportional constants in the para-metrization of the static nonlinearity. The second type addresses the identification of both the linear dynamic part and the static nonlinearity, where only limited a priori information regarding the structure of the nonlinearity is available. The improved robustness properties of the algorithms developed for this second type of Hammerstein identification problem over existing correlation-based schemes is illustrated by a numerical example.
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