DISCRETE-TIME LEAST-SQUARES PADE ORDER REDUCTION - A STABILITY PRESERVING METHOD

Authors
LUCAS TN SMITH ID
Citation
Tn. Lucas et Id. Smith, DISCRETE-TIME LEAST-SQUARES PADE ORDER REDUCTION - A STABILITY PRESERVING METHOD, Proceedings of the Institution of Mechanical Engineers. Part I, Journal of systems and control engineering, 212(I1), 1998, pp. 49-56
Citations number
19
Categorie Soggetti
Robotics & Automatic Control","Robotics & Automatic Control
Journal title
Proceedings of the Institution of Mechanical Engineers. Part I, Journal of systems and control engineering → ACNP
ISSN journal
09596518
Volume
212
Issue
I1
Year of publication
1998
Pages
49 - 56
Database
ISI
SICI code
0959-6518(1998)212:I1<49:DLPOR->2.0.ZU;2-Q
Abstract
A new stability preservation property is proved for the least-squares Pade order reduction method when applied to discrete-time systems. It is shown that the property depends on which free reduced model paramet er is chosen to be unity. Clarification is also given on how the syste m is actually approximated using this method. An example illustrates t he enhanced appeal of the method as a result of the stability preserva tion property.