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Title: Connecting border collision with saddle-node bifurcation in switched dynamical systems
Authors: Ma, Yue
Tse, C. K. Michael
Kousaka, Takuji
Kawakami, Hiroshi
Subjects: Border collision
Saddle-node bifurcation
Switched dynamical systems
Unstable solutions
Issue Date: Sep-2005
Publisher: IEEE
Source: IEEE transactions on circuits and systems. II, Express briefs, Sept. 2005, v. 52, no. 9, p. 581-585.
Abstract: Switched dynamical systems are known to exhibit border collision, in which a particular operation is terminated and a new operation is assumed as one or more parameters are varied. In this brief, we report a subtle relation between border collision and saddle-node bifurcation in such systems. Our main finding is that the border collision and the saddle-node bifurcation are actually linked together by unstable solutions which have been generated from the same saddle-node bifurcation. Since unstable solutions are not observable directly, such a subtle connection has not been known. This also explains why border collision manifests itself as a “jump” from an original stable operation to a new stable operation. Furthermore, as the saddle-node bifurcation and the border collision merge tangentially, the connection shortens and eventually vanishes, resulting in an apparently continuous transition at border collision in lieu of a “jump.” In this brief, we describe an effective method to track solutions regardless of their stability, allowing the subtle phenomenon to be uncovered.
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Type: Journal/Magazine Article
DOI: 10.1109/TCSII.2005.850488
ISSN: 1057-7130
Appears in Collections:EIE Journal/Magazine Articles

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