Nonlinear Sciences – Chaotic Dynamics
Scientific paper
1998-03-02
Nonlinear Sciences
Chaotic Dynamics
4 pages, Latex, 4 postscript figures, To appear in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.80.3049
It has been proposed to make practical use of chaos in communication, in enhancing mixing in chemical processes and in spreading the spectrum of switch-mode power suppies to avoid electromagnetic interference. It is however known that for most smooth chaotic systems, there is a dense set of periodic windows for any range of parameter values. Therefore in practical systems working in chaotic mode, slight inadvertent fluctuation of a parameter may take the system out of chaos. We say a chaotic attractor is robust if, for its parameter values there exists a neighborhood in the parameter space with no periodic attractor and the chaotic attractor is unique in that neighborhood. In this paper we show that robust chaos can occur in piecewise smooth systems and obtain the conditions of its occurrence. We illustrate this phenomenon with a practical example from electrical engineering.
Banerjee Soumitro
Grebogi Celso
Yorke James A.
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