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Cannot plot full OutputResponse

Sai Fisher
Posted 15 hours ago

Hi Everyone,
I've found that some transfer functions cannot be fully plotted for their step responses. I've tried this both on my local notebook and on Wolfram Cloud, and the results are the same.

Plot[Evaluate[
  Tooltip[OutputResponse[
    TransferFunctionModel[((s + 5)/(s + 
           1) 2/((s + 1) (s + 3)))/(1 + (s + 5)/(s + 
            1) 2/((s + 1) (s + 3))), s], UnitStep[t], t], t]], {t, 0, 
  10}, AxesLabel -> {"t", "x(t)"}, AspectRatio -> Automatic]

enter image description here enter image description here
POSTED BY: Sai Fisher
1 Reply
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Try:

Plot[Evaluate[
  OutputResponse[
   TransferFunctionModel[((s + 5)/(s + 
          1) 2/((s + 1) (s + 3)))/(1 + (s + 5)/(s + 
           1) 2/((s + 1) (s + 3))), s], UnitStep[t], t]], {t, 0, 10}, 
 AxesLabel -> {"t", "x(t)"}, WorkingPrecision -> 20, PlotRange -> All]
POSTED BY: Mariusz Iwaniuk
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