Title :
Robustness of nonlinear control systems with respect to unmodeled dynamics
Author :
Zhang, Youping ; Ioannou, Petros A.
Author_Institution :
Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We examine the global stability properties of nonlinear controllers in the presence of high frequency unmodeled dynamics. We develop necessary and sufficient conditions for a general class of nonlinear control laws, under which global signal boundedess or asymptotic stability is guaranteed. We show that a wide class of nonlinear control laws does not satisfy these conditions and therefore does not guarantee global stability in the presence of high frequency unmodeled dynamics
Keywords :
asymptotic stability; dynamics; nonlinear control systems; robust control; asymptotic stability; global signal boundedess; global stability properties; high frequency unmodeled dynamics; necessary and sufficient conditions; nonlinear control systems; Control systems; Frequency; Linear systems; Nonlinear control systems; Nonlinear dynamical systems; Nonlinear systems; Robust control; Robust stability; State-space methods; Uncertainty;
Conference_Titel :
Decision and Control, 1996., Proceedings of the 35th IEEE Conference on
Print_ISBN :
0-7803-3590-2
DOI :
10.1109/CDC.1996.574326
