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Oscillation and convergence behaviors exhibited in an ‘unstable’ second-order digital filter with saturation-type nonlinearity

By Wing-Kuen Ling, Charlotte Yuk-Fan Ho, Raymond Shing-Keung Leung and Peter Kwong-Shun Tam


This letter explains the oscillatory behaviors exhibited in a second-order digital filter with saturation-type nonlinearity via the Hopf bifurcation theorem. It is shown that depending on the bifurcation parameter, the state variables may converge to zero even when the eigenvalues of the system matrix are outside the unit circle

Topics: H310 Dynamics
Publisher: Wiley Blackwell
Year: 2004
OAI identifier:

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