✦ LIBER ✦

Sub-optimal discrete model reduction by multipoint Padé approximation

✍ Scribed by T.N. Lucas

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 517 KB
Volume: 333
Category: Article
ISSN: 0016-0032
DOI: 10.1016/0016-0032(95)00088-7

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✦ Synopsis

A multipoint Padk approximation method is presented for obtainin9 a reduced order z-transfer function, with a pre-determined denominator, such that the square-error-sum of time responses between the full and reduced models is minimized. An extension of the method to matchin 9 the initial time response values for impulse and step inputs is also 9iven. The method and its extension are seen to be easy to apply and are very amenable to use on modern computer algebra systems, consisting entirely of simple matrix operations. Numerical examples are 9iven to illustrate the application of the technique.

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