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A neurofuzzy scheme to on-line identification in an adaptive–predictive control

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Abstract

A neurofuzzy scheme has been designed to carry out on-line identification, with the aim of being used in an adaptive–predictive dynamic matrix control (DMC) of unconstrained nonlinear systems represented by a transfer function with varying parameters. This scheme supplies to the DMC controller the linear model and the nonlinear output predictions at each sample instant, and is composed of two blocks. The first one makes use of a fuzzy partition of the external variable universe of discourse, which smoothly commutes between several linear models. In the second block, a recurrent linear neuron with interpretable weights performs the identification of the models by means of supervised learning. The resulting identifier has several main advantages: interpretability, learning speed, and robustness against catastrophic forgetting. The proposed controller has been tested both on simulation and on a real laboratory plant, showing a good performance.

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Acknowledgements

We gratefully appreciate the support given by the Spanish Comisión Interministerial de Ciencia y Tecnología (CICYT) under grant 1DPI 2000 04150- P403.

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Authors and Affiliations

  1. Departamento de Ingeniería de Sistemas y Automática, Universidad Politécnica de Cartagena, Campus de la Muralla del Mar, s/n, Cartagena, 30202, Murcia, Spain

    J. J. Ibarrola, M. Pinzolas & J. M. Cano

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  1. J. J. Ibarrola
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  2. M. Pinzolas
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  3. J. M. Cano
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Correspondence to J. J. Ibarrola.

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Ibarrola, J.J., Pinzolas, M. & Cano, J.M. A neurofuzzy scheme to on-line identification in an adaptive–predictive control. Neural Comput & Applic 15, 41–48 (2006). https://doi.org/10.1007/s00521-005-0006-x

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  • DOI: https://doi.org/10.1007/s00521-005-0006-x

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