Title :
Controlling chaos in a CO2 laser
Author :
Basso, M. ; Genesio, R. ; Tesi, A.
Author_Institution :
Dipt. di Sist. e Inf., Univ. di Firenze, Florence, Italy
Abstract :
The paper discusses the application of two recently proposed feedback control techniques for stabilizing chaotic motions to periodic ones in a CO2 laser with modulated losses. The first method employs delayed control signals for stabilizing unstable periodic orbits embedded in the chaotic attractor, while the second one is based on the cancellation of the subharmonic components of the chaotic motions. Despite the conceptual difference originating these two techniques, it is shown that the designed controllers provide quite similar control performance.
Keywords :
control system synthesis; gas lasers; laser feedback; nonlinear control systems; optical chaos; optical control; stability; CO2 laser; chaos control; chaotic attractor; chaotic motion stabilization; chaotic motions; delayed control signals; feedback control techniques; subharmonic component cancellation; unstable periodic orbit stabilization; Bifurcation; Chaos; Frequency control; Limit-cycles; Mathematical model; Orbits; Transfer functions; Feedback stabilization; Nonlinear control; Nonlinear dynamics;
Conference_Titel :
Control Conference (ECC), 1997 European
Conference_Location :
Brussels
Print_ISBN :
978-3-9524269-0-6
