Dear All, I have actually two questions: 1. I have multiple transfer functions and I am showing their respective Bode magnitude plot in one plot. For example:
TF1 = TransferFunctionModel[{{{
1.7607354217407793`*^7 + 15432.18944717527 s}},
1.9007939847037688`*^7 + 17800.70861749659 s + 1. s^2}, s]
TF2 = TransferFunctionModel[{{{
3.9239734146090127`*^6 + 3281.037344551362 s}},
6.16863218865207*^6 + 6389.425453315465 s + 1. s^2}, s]
I have identified the 3-dB cutoff for each of them and now I am displaying them as in the picture using Show. My code looks like this:
P1 = BodePlot [TFalpha1, PlotLayout -> "Magnitude",
PlotStyle -> Directive[Green, Thick],
Mesh -> {{{-3}}, {{16659.759374487337`}}},
GridLinesStyle -> Directive[Green, Dashed],
GridLines -> {{16659.759374487337`}, None},
MeshStyle -> PointSize[Large]];
P2 = BodePlot [TFCC , PlotLayout -> "Magnitude",
PlotStyle -> Directive[Orange, Thick],
Mesh -> {{{-3}}, {{5377.124388436974`}}},
GridLinesStyle -> Directive[Orange, Dashed],
GridLines -> {{5377.124388436974`}, None},
MeshStyle -> PointSize[Large]];
Show[P1, P2]
I used this code since I want to show where each of my 3-dB point projects at the w-axis. When I check individual plots they do have clear dashed lines on the w-axis (just like the green line in the picture, there is a dashed line in the Orange curve). But whenevr I try to combine them using Show, only the green line is there and the orange line corresponding to the Orange curve is disappeared. How can I get both the green and orange line plotted to show at what value the project on w-axis? A related question is how I can modify my code to also show where the points intersect with the y-axis? 2. Let's assume I have to show another point on the same curve (say the green one) which is 1.88 *wc (where wc is the 3-dB point) and have to depict where it intersects the w and y axes (just like the previous one). I want to show it as a different symbol than the cut-off point (which is green solid circle). Is there a way to do it?
I'll very much appreciate your help.
Regards,
Koushik
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