Title :
Near-optimal output feedback regulation of ill-conditioned linear systems
Author :
Moerder, Daniel D. ; Calise, Anthony J.
Author_Institution :
Dept. of Electr. Eng., Drexel Univ., Philadelphia, PA, USA
fDate :
5/1/1988 12:00:00 AM
Abstract :
A two-time scale approximation for the linear quadratic optimal output feedback regulator program is examined. Necessary conditions for optimality, as well as an algorithm for computing locally near-optimal gains are derived. If it is assumed that the slow and fast subsystem initial conditions are uniformly distributed, optimal gains for the two-time-scale problem provide a second-order approximation to optimal closed-loop performance in the unperturbed system. This is verified with a numerical example
Keywords :
closed loop systems; feedback; linear systems; multivariable control systems; optimal control; closed-loop performance; ill-conditioned linear systems; linear quadratic optimal output feedback regulator; near-optimal gains; necessary condition; two-time scale approximation; unperturbed system; Aerodynamics; Control systems; Linear feedback control systems; Linear programming; Linear systems; Mechanical engineering; NASA; Output feedback; Regulators; State feedback;
Journal_Title :
Automatic Control, IEEE Transactions on
