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Multiple model approach to linear parameter varying time-delay system identification with EM algorithm
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DOI：10.1016/j.jfranklin.2014.09.015.png)
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Abstract
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This paper is concerned with the identification problem of linear parameter varying (LPV) time-delay systems. Due to inherent nonlinearity, the industrial processes are often approximately described by an LPV model constructed by synthesizing multiple local models. Time-delay is commonly experienced in industrial processes and it can be parameter varying or constant in the process model. The multiple model identification of LPV systems with parameter varying or constant time-delay is formulated in the scheme of the expectation-maximization (EM) algorithm and the parameter varying property and the time-delay property of the process are handled simultaneously. The irrigation channel example and high purity distillation column example are used to present the effectiveness of the proposed method. (C) 2014 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.
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