New matrix method for multipoint Padé approximation of transfer functions
作者:
T. N. LUCAS,
期刊:
International Journal of Systems Science
(Taylor Available online 1993)
卷期:
Volume 24,
issue 5
页码: 809-818
ISSN:0020-7721
年代: 1993
DOI:10.1080/00207729308949525
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A new way of formulating a multipoint Padé approximant of a linear system transfer function is given. It is seen to be very flexible and computationally efficient. The expansion points can be a mixture of real, complex, purely imaginary and multiple points with no complex arithmetic required. The underlying idea of the method is to convert the rational approximation problem into one of polynomial approximation. This results in simple matrix multiplications and the solution of a set of linear equations to derive the reduced model. Examples are given to demonstrate the application of the technique.
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