Article ID Journal Published Year Pages File Type
722591 IFAC Proceedings Volumes 2006 5 Pages PDF
Abstract

This paper deals with the use of the Chebyshev-Padé approximation (CP) in order to achieve accurate direct discrete-time approximations to the fractional-order differentiator/integrator. It is shown how, for a given order of the transfer functions, CP is much more accurate at low frequencies than the continued fraction expansion (CFE). Furthermore, CP can be more accurate than a CFE approximation of a higher order.

Related Topics
Physical Sciences and Engineering Engineering Computational Mechanics