FeedbackSector

FeedbackSector
is an option to NyquistPlot that specifies the sector limits of the nonlinearity in the feedback.

DetailsDetails

  • FeedbackSector together with NyquistPlot can be used to analyze stability using the circle criterion.
  • FeedbackSector->{a,b} specifies a nonlinear feedback , where and is the input variable, is the output variable, and is the time variable.

ExamplesExamplesopen allclose all

Basic Examples  (1)Basic Examples  (1)

A stable system:

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And its NyquistPlot lies within the circle for feedback in the sector :

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Thus, the closed-loop system is stable for any feedback within sector :

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Introduced in 2012
(9.0)