Browsing by Author "Leu, WY"

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Anti-control of chaos of two-degrees-of-freedom loudspeaker system and chaos synchronization of different order systems
(2004-05-01)
Ge, ZM
;
Leu, WY
;
機械工程學系
;
Department of Mechanical Engineering
The chaos anti-control and synchronization of a two-degrees-of-freedom loudspeaker system are studied in this paper. Anti-control term is added to change state from regular to chaos. The anti-control methods such as addition of a constant force, of a periodic square wave, of a periodic saw tooth wave, of a periodic triangle wave, of a periodic rectified sinusoidal wave and of the xx term are used. The results are illustrated by numerical results, i.e. bifurcation diagram and Lyapunov exponents. Next, chaos synchronization of different order system is studied. Two methods are presented to achieve the synchronization: the addition of the coupling terms, the linearization of the error dynamics. The results are illustrated by phase diagram and time response. (C) 2003 Elsevier Ltd. All rights reserved.
Chaos synchronization and parameter identification for loudspeaker systems
(2004-09-01)
Ge, ZM
;
Leu, WY
;
機械工程學系
;
Department of Mechanical Engineering
The identical two-degrees-of-freedom loudspeaker systems are discussed for synchronization of chaos in this paper. Two methods are used to synchronize two identical chaotic systems with different initial condition: the adaptive control and the Gerschgorin's theorem. Finally we research the parameter identification for two identical two-degrees-of-freedom loudspeaker systems by adaptive control and random optimization method. (C) 2004 Elsevier Ltd. All rights reserved.