Title :
Resilient dynamic controller design via quadratic Lyapunov bounds
Author :
Haddad, Wassim M. ; Corrado, Joseph R.
Author_Institution :
Sch. of Aerosp. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
One of the fundamental problems in feedback control design is the ability of the control system to maintain stability and performance in the face of system uncertainties. To this end, elegant multivariable robust control design frameworks such as ℋ∞ control, L1 control, and μ synthesis have been developed to address the robust stability and performance control problem. An implicit assumption inherent in these design frameworks is that the controller will be implemented exactly. In a paper by Keel and Bhattacharyya (1996) it was shown that even though such frameworks are robust with respect to system uncertainty, they are extremely fragile with respect to errors in the controller coefficients. In this paper, we extend the fixed-structure controller synthesis approach to develop non-fragile or resilient controllers to controller gain variations
Keywords :
Lyapunov methods; Riccati equations; asymptotic stability; closed loop systems; compensation; control system synthesis; feedback; linear quadratic control; robust control; uncertain systems; controller coefficients; controller gain variations; feedback control design; fixed-structure controller synthesis; multivariable robust control design frameworks; nonfragile controllers; quadratic Lyapunov bounds; resilient dynamic controller; system uncertainties; Aerodynamics; Application software; Control system synthesis; Control systems; Costs; Error correction; Robust control; Robust stability; Shape control; Uncertainty;
Conference_Titel :
Decision and Control, 1997., Proceedings of the 36th IEEE Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4187-2
DOI :
10.1109/CDC.1997.657785