Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
722591 | IFAC Proceedings Volumes | 2006 | 5 Pages |
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.
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