Title :
Optimal reduced-order state estimation for unstable plants
Author :
Bernstein, Dennis S. ; Haddad, Wassim M.
Author_Institution :
Harris Corp., Melbourne, FL, USA
Abstract :
The problem of optimal reduced-order steady-state state estimation is considered for the case in which the plant has unstable poles. In contrast to the standard full-order estimation problem involving a single algebraic Riccati equation, the solution to the reduced-order problem involves one modified Riccati equation and one Lyapunov equation coupled by a projection matrix. This projection is completely distinct from the projection obtained by D.S. Bernstein and D.C. Hyland (1985) for stable plants
Keywords :
matrix algebra; poles and zeros; state estimation; Lyapunov equation; Riccati equation; identification; optimal reduced order state estimation; projection matrix; steady-state; unstable plants; Aerospace engineering; Constraint theory; Contracts; Government; Observers; Riccati equations; State estimation; Steady-state; Stress; Subspace constraints;
Conference_Titel :
Decision and Control, 1988., Proceedings of the 27th IEEE Conference on
Conference_Location :
Austin, TX
DOI :
10.1109/CDC.1988.194762
