Title :
Measures for stability robustness in linear quadratic systems
Author :
Di Ruscio, David
Author_Institution :
Div. of Eng. Cybernetics, Norwegian Inst. of Technol., Trondheim, Norway
Abstract :
The author both reviews some existing stability robustness measures for linear-quadratic (LQ)-optimal systems in the presence of unstructured additive perturbations in the closed-loop system and also derives some new measures. Bounds on the perturbation matrix which preserve the stability of the closed-loop system are presented. Both time and frequency domain results are presented. A numerical example is given
Keywords :
closed loop systems; frequency-domain analysis; optimal control; stability; time-domain analysis; closed-loop system; frequency domain results; linear quadratic systems; optimal control; perturbation matrix bounds; stability robustness; time domain results; unstructured additive perturbations; Control systems; Eigenvalues and eigenfunctions; Frequency domain analysis; Frequency measurement; Q measurement; Riccati equations; Robust stability; Symmetric matrices; Time measurement; Vectors;
Conference_Titel :
Decision and Control, 1992., Proceedings of the 31st IEEE Conference on
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0872-7
DOI :
10.1109/CDC.1992.371469
