Nonlinear Sciences – Chaotic Dynamics
Scientific paper
1998-08-14
Nonlinear Sciences
Chaotic Dynamics
Revised version of earlier submission. 11 pages. Gnuzipped postscript including figures. To be published in Physical Review E,
Scientific paper
10.1103/PhysRevE.59.4052
Recent investigations on the bifurcations in switching circuits have shown that many atypical bifurcations can occur in piecewise smooth maps which can not be classified among the generic cases like saddle-node, pitchfork or Hopf bifurcations occurring in smooth maps. In this paper we first present experimental results to establish the need for the development of a theoretical framework and classification of the bifurcations resulting from border collision. We then present a systematic analysis of such bifurcations by deriving a normal form --- the piecewise linear approximation in the neighborhood of the border. We show that there can be eleven qualitatively different types of border collision bifurcations depending on the parameters of the normal form, and these are classified under six cases. We present a partitioning of the parameter space of the normal form showing the regions where different types of bifurcations occur. This theoretical framework will help in explaining bifurcations in all systems which can be represented by two dimensional piecewise smooth maps.
Banerjee Soumitro
Grebogi Celso
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