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di Bernardo, M,Budd, CJ,Champneys, AR,Kowalczyk, P,Nordmark, AB,Tost, GO,Piiroinen, PT
2008
December
Siam Review
Bifurcations in Nonsmooth Dynamical Systems
Published
()
Optional Fields
nonsmooth dynamical system bifurcation discontinuity piecewise equilibria limit cycles BORDER-COLLISION BIFURCATIONS PIECEWISE-SMOOTH SYSTEMS STICK-SLIP VIBRATIONS GRAZING BIFURCATIONS IMPACT OSCILLATORS LINEAR-OSCILLATOR SLIDING BIFURCATIONS MECHANICAL SYSTEMS BUCK CONVERTER DRY FRICTION
50
629
701
A review is presented of the one-parameter, nonsmooth bifurcations that occur in a variety of continuous-time piecewise-smooth dynamical systems. Motivated by applications, a pragmatic approach is taken to defining a discontinuity-induced bifurcation (DIB) as a nontrivial interaction of a limit set with respect to a codimension-one discontinuity boundary in phase space. Only DIBs that are local are considered, that is, bifurcations involving equilibria or a single point of boundary interaction along a limit cycle for flows. Three classes of systems are considered, involving either state jumps, jumps in the vector field, or jumps in some derivative of the vector field. A rich array of dynamics are revealed, involving the sudden creation or disappearance of attractors, jumps to chaos, bifurcation diagrams with sharp corners, and cascades of period adding. For each kind of bifurcation identified, where possible, a kind of "normal form" or discontinuity mapping (DM) is given, together with a canonical example and an application. The goal is always to explain dynamics that may be observed in simulations of systems which include friction oscillators, impact oscillators, DC-DC converters, and problems in control theory.
DOI 10.1137/050625060
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