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Is the generalized Pade approximation of the dead time applicable to stability margins analysis?

Journal: Studia z Automatyki i Informatyki (Vol.42, No. -)

Publication Date:

Authors : ;

Page : 19-27

Keywords : stability analysis; fractional-order systems; time-delay; Padé approximation;

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Abstract

The paper discusses the applicability of the generalized Padé approximation to stability analysis of systems with time delays, which proves to be inapplicable. As the result of the approximation, the stability margin of the resulting fractional-order closed-loop system is strongly dependent on the order of the fractional-order approximation, leading to inaccuracies.

Last modified: 2019-01-04 07:25:05