Title :
Gain margins of multivariable MRAC systems
Author :
Sang, Qian ; Tao, Gang
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Virginia, Charlottesville, VA, USA
Abstract :
This paper studies the gain margins (GM) of multivariable model reference adaptive control (MRAC) systems: the parameter range of a control gain matrix in a designed MRAC system for maintaining the desired closed-loop signal boundedness and asymptotic output tracking. Analytical GM results are obtained for both continuous-time and discrete-time direct MRAC schemes applied to multi-input multi-output (MIMO) LTI systems. The GM problem is also studied for a class of indirect multivariable MRAC systems.
Keywords :
MIMO systems; closed loop systems; continuous time systems; control system analysis; control system synthesis; discrete time systems; model reference adaptive control systems; multivariable control systems; asymptotic output tracking; closed-loop signal boundedness; continuous-time system; discrete-time system; gain margins; multi-input multi-output LTI systems; multivariable model reference adaptive control system; Adaptive control; Aerospace control; Aircraft; Automatic control; Control systems; MIMO; Programmable control; Signal design; Stability; Uncertainty; Gain margin; LDS decomposition; high frequency gain matrix; model reference adaptive control;
Conference_Titel :
Decision and Control, 2008. CDC 2008. 47th IEEE Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-3123-6
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2008.4738820
