Structure Identification for Block-Oriented Nonlinear Models Using Relay Feedback Tests

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

CHUN-YUN TSAI¹  HSIAO-PING HUANG¹  MING-WEI LEE¹ 

[1] Department of Chemical Engineering, National Taiwan University

关键词: Block-Oriented;    Nonlinear;    Wiener;    Hammerstein;    Relay Feedback;    Structure Identification;   

DOI  :  10.1252/jcej.34.748

来源: Maruzen Company Ltd

【 摘 要 】

References(10)Cited-By(5)A block-oriented nonlinear system consists of a series of blocks. These blocks represent both memoryless nonlinearity and linear dynamics that comprise the overall input-output dynamics of the system. Under this category, the nonlinear systems are represented as Wiener-, Hammerstein-, Wiener-Hammerstein, and Hammerstein-Wiener type of models, etc. Since methods used to estimate the parameters vary with different types of model, structure identification becomes an essential step in identification. In this article, a strategy based on the results of consecutive relay feedback experiments is proposed to select a model among those block oriented ones aforementioned. After the model structure has been determined, estimation of parameters can then proceed. A few example processes are used to illustrate the identification by this proposed method.

【 授权许可】

Unknown