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visits member for 1 year, 8 months
seen 10 hours ago

Oct
1
revised Problems with RootLocusPlot
Update based in improved performance in newer release
Oct
1
answered How to fix BodePlot that comes with Mathematica?
Oct
1
comment On using DiracDelta[t] in OutputResposne in version 10. Different result from version 9
@Ed Mendes, the fix should be in the next release.
Oct
1
comment StateSpaceRealization “ControllableCompanion” does not generate ControllableCompanion form from DE
The StateSpaceRealization option was being ignored since v8 (and probably in CSP as well.) The fix should be in the next release.
Sep
30
awarded  Explainer
Sep
29
answered Extracting filter coefficients from a transfer function
Sep
5
comment On using DiracDelta[t] in OutputResposne in version 10. Different result from version 9
@Ed Mendes: Well, features need to be documented, but bugs need to be fixed!
Sep
3
comment ToDiscreteTimeModel fails following video
the matrices of the discrete-time model are correct. The problem is in handling of the variables.
Sep
3
answered ToDiscreteTimeModel fails following video
Sep
3
comment NonlinearStateSpaceModel: Trying to parse the documentation
The example text has a couple of typos. It should read $\ldots x_1'(t)=u(t)-x_1(t) x_2(t), x_2'(t)=u(t) x_2(t)+1 \ldots$
Aug
22
answered On using DiracDelta[t] in OutputResposne in version 10. Different result from version 9
Aug
22
comment On using DiracDelta[t] in OutputResposne in version 10. Different result from version 9
@Nasser, pls follow the suggestion from Jens. I will provide a more elaborate answer on why the behavior changed.
Aug
21
comment Laplace: from differential equation to transfer function
These are undocumented, so naturally the best way to hear about them is on sites such as these.
Aug
20
answered Laplace: from differential equation to transfer function
Jul
15
answered A problem with “RiccatiSolve::ncsol: Cannot compute a stabilizing solution to the matrix equation ”
Apr
21
revised Plotting a StateResponse inside a loop for some reason gives an error
Adding control-systems tag
Apr
21
suggested suggested edit on Plotting a StateResponse inside a loop for some reason gives an error
Apr
21
comment Plotting a StateResponse inside a loop for some reason gives an error
Use Evaluate. Do[Plot[Evaluate@StateResponse[{StateSpaceModel[{amtrx[[i]], b, c, d}], {rad3, rad4}}, M1[t], {t, 0, 5}][[1]], {t, 0, 5}], {i, 9}]
Apr
1
suggested suggested edit on Plotting solutions of a 4th order polynomial equation
Apr
1
comment Plotting solutions of a 4th order polynomial equation
Glad it solved your problem.