2 NECESSARY CONDITIONS FOR A COMPLEX POLYNOMIAL TO BE STRICTLY HURWITZ AND THEIR APPLICATIONS IN ROBUST STABILITY ANALYSIS - COMMENTS

Authors
POLYAK BT TSYPKIN YZ
Citation
Bt. Polyak et Yz. Tsypkin, 2 NECESSARY CONDITIONS FOR A COMPLEX POLYNOMIAL TO BE STRICTLY HURWITZ AND THEIR APPLICATIONS IN ROBUST STABILITY ANALYSIS - COMMENTS, IEEE transactions on automatic control, 39(5), 1994, pp. 1147-1147
Citations number
5
Categorie Soggetti
Controlo Theory & Cybernetics","Robotics & Automatic Control","Engineering, Eletrical & Electronic
Journal title
IEEE transactions on automatic control → ACNP
ISSN journal
00189286
Volume
39
Issue
5
Year of publication
1994
Pages
1147 - 1147
Database
ISI
SICI code
0018-9286(1994)39:5<1147:2NCFAC>2.0.ZU;2-M
Abstract
In the above note,1 the authors present two simple necessary condition s for a polynomial with complex coefficients to be strictly Hurwitz. T hey claim that this is an extension and refinement of a recent result [1]. We comment that the second condition is well known and that the f irst one is a direct corollary of Newton's test for a polynomial to ha ve only real roots.