Title :
Adaptive control systems with L1+α tracking
Author_Institution :
Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA
fDate :
29 June-1 July 1994
Abstract :
A redesign of model reference adaptive control is proposed using a non-quadratic Lyapunov function to derive a new adaptive law. For systems with relative degree one such a redesign ensures a tracking error which belongs to L1+α. A choice of 0<α<1 leads to a generically faster convergence of the tracking error to zero than the standard adaptive law with α=1. Simulations indicate that such a redesign improves system tracking performance.
Keywords :
Lyapunov methods; adaptive control; control system synthesis; convergence; linear systems; model reference adaptive control systems; tracking; L1+α tracking; MRAC; convergence; linear time invariant systems; model reference adaptive control; nonquadratic Lyapunov function; tracking error; Adaptive control; Adaptive systems; Convergence; Error correction; Lyapunov method; Programmable control;
Conference_Titel :
American Control Conference, 1994
Print_ISBN :
0-7803-1783-1
DOI :
10.1109/ACC.1994.752262
