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research article

A clustering technique for the identification of piecewise affine and hybrid systems

Ferrari-Trecate, G.
•
Muselli, M.
•
Liberati, D.
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2003
Automatica

We propose a new technique for the identification of discrete-time hybrid systems in the Piece-Wise Affine (PWA) form. This problem can be formulated as the reconstruction of a possibly discontinuous PWA map with a multi-dimensional domain. In order to achieve our goal, we provide an algorithm that exploits the combined use of clustering, linear identification, and pattern recognition techniques. This allows to identify both the affine submodels and the polyhedral partition of the domain on which each submodel is valid avoiding gridding procedures. Moreover, the clustering step (used for classifying the datapoints) is performed in a suitably defined feature space which allows also to reconstruct different submodels that share the same coefficients but are defined on different regions. Measures of confidence on the samples are introduced and exploited in order to improve the performance of both the clustering and the final linear regression procedure.

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Type
research article
DOI
10.1016/S0005-1098(02)00224-8
Author(s)
Ferrari-Trecate, G.
Muselli, M.
Liberati, D.
Morari, M.
Date Issued

2003

Published in
Automatica
Volume

39

Start page

205

End page

217

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
SCI-STI-GFT  
Available on Infoscience
January 10, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/132682
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