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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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