By Topic

On root locus traps

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Keel, L.H. ; Center of Excellence in Inf. Syst., Tennessee State Univ., Nashville, TN, USA ; Bhattacharyya, S.P.

We consider a linear time invariant plant under constant gain feedback control. We derive necessary and sufficient conditions under which a closed loop characteristic root remains trapped on the real axis of the right half plane for positive, negative or all values of feedback gains. These conditions are stated in terms of the real axis right half plane poles and zeros of the plant transfer function G(s) and those of G'(s). The nonoccurrence of these conditions is a new necessary condition for constant gain feedback stabilizability. They provide a new lower bound on the dynamic order of stabilizing controllers. The condition which is similar to but stronger than the parity interlacing condition for strong stabilizability is illustrated with examples

Published in:

American Control Conference, 1999. Proceedings of the 1999  (Volume:6 )

Date of Conference:

1999