Observer-based robust-H-infinity control laws for uncertain linear systemsBased on the algebraic Riccati equation approach, this paper presents a simple and flexible method for designing observer-based robust-H-infinity control laws for linear systems with structured parameter uncertainty. The observer-based robust-H-infinity output-feedback control law, obtained by solving three augmented algebraic Riccati equations, provides both robust stability and disturbance attenuation with H-infinity-norm bound for the closed-loop uncertain linear system. Several tuning parameters are embedded into the augmented algebraic Riccati equations so that flexibility in finding the symmetric positive-definite solutions (and hence, the robust-H-infinity control laws) is significantly increased. A benchmark problem associated with a mass-spring system, which approximates the dynamics of a flexible structure, is used to illustrate the design methodologies, and simulation results are presented.
Document ID
19910065030
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shieh, Leang S. (Houston, University TX, United States)
Sunkel, J. W. (NASA Johnson Space Center Houston, TX, United States)
Wang, Yeih J. (Houston Univ. TX, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Subject Category
Cybernetics
Report/Patent Number
AIAA PAPER 91-2688
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference