Least-Squares Design of Digital Fractional-Order Operators

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2004

Autores

Ramiro Barbosa (Autor) FEUP; José A. Tenreiro Machado (Autor) FEUP; Isabel Ferreira (Autor) FEUP

Ata de Conferência Internacional

Título: Proceedings of the FDA'04 - First IFAC Workshop on Fractional Differentiation and its Applications

Páginas: 434-439

First IFAC Workshop on Fractional Differentiation and its Applications

Bordeaux, France, 19 a 21 de Julho de 2004

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

Abstract (EN): In this paper we develop a method for obtaining digital rational approximations to fractional-order operators of type s J , where J � ƒ. The proposed method is based on the least-squares (LS) minimization between the impulse response of the fractional Euler/Tustin operators and the digital rational-fraction approximation. We make a comparison with other approaches and the results reveal that the LS method gives superior approximations. The effectiveness of the method is demonstrated both in the time and frequency domains through an illustrative example. Copyright © 2004 IFAC

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6