A new approximation algorithm of fractional order system models based optimization / Li Meng in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 134 N° 4 (Juillet 2012)  

Public ISBD [article]  inTransactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 134 N° 4 (Juillet 2012) . - 07 p. Titre : A new approximation algorithm of fractional order system models based optimization Type de document : texte imprimé Auteurs : Li Meng, Auteur ; Dingyu Xue, Auteur Année de publication : 2012 Article en page(s) : 07 p. Note générale : Dynamic systems Langues : Anglais (eng) Mots-clés : Fractional order systems Pole-zero pairs Approximate system Magnitude fitting Phase Index. décimale : 629.8 Résumé : This paper proposes a new approximation scheme which is an extension to the well-established Charef's approximation method for fractional order systems. The method relaxes the constraints on the locations of the pole-zero pairs of the approximate system, which provides more flexibility and space for approximate system to approach the original system as close as possible. The approximate system based on an optimization process performs not only a good magnitude fitting but also a good phase fitting. The benefits from using the proposed scheme are illustrated by numerical examples in frequency domains. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA000134000004 [...] [article] A new approximation algorithm of fractional order system models based optimization [texte imprimé] / Li Meng, Auteur ; Dingyu Xue, Auteur . - 2012 . - 07 p. Dynamic systems Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 134 N° 4 (Juillet 2012) . - 07 p. Mots-clés : Fractional order systems Pole-zero pairs Approximate system Magnitude fitting Phase Index. décimale : 629.8 Résumé : This paper proposes a new approximation scheme which is an extension to the well-established Charef's approximation method for fractional order systems. The method relaxes the constraints on the locations of the pole-zero pairs of the approximate system, which provides more flexibility and space for approximate system to approach the original system as close as possible. The approximate system based on an optimization process performs not only a good magnitude fitting but also a good phase fitting. The benefits from using the proposed scheme are illustrated by numerical examples in frequency domains. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA000134000004 [...]

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