Fractional describing function of systems with Coulomb friction
Nonlinear Dynamics(2008)
摘要
This paper studies the describing function (DF) of systems constituted by a mass subjected to nonlinear friction. The friction force is decomposed into two components, namely, the viscous and the Coulomb friction. The system dynamics is analyzed in the DF perspective revealing a fractional-order behavior. The reliability of the DF method is evaluated through the signal harmonic contents.
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关键词
Describing function,Friction,Control,Modeling
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