My question is in the title :). I used ControlSystems package but wasn’t able to find a clean way to plot those asymptotes, and didn’t find any related topics here… Do I need to built it from scratch ? Thx for the help !
ControlSystems.jl does not contain any functionality to plot asymptotes. It sounds like a hard problem to solve well in general, unless you want the 0 \leftarrow and \rightarrow \infty asymptotes for simple systems only. For example, what do you draw for
\dfrac{1}{(s + 1) (s + 100)}
? Do you draw the line between 1 and 100, or only the lines from 100 and upwards and 1 and downwards?
Thanks for your comment, usually we break down the transfer function (here 1/(s+1) * 1/(s+100)) then place the natural frequencies on the graph and start drawing pole by pole, finally we redraw the whole response. ControlSystems is capable of providing poles, so I assume that by following the above steps it’s possible to reach the asymptotic response. I’ve got a bit of time now, so I’ll try to come up with something (with my humble level of Julia programming :). There’s a nice (French) lesson on youtube about this, and they use their transfer function as an example: H(p)=\frac{10.(1+0.5p)}{p.(1+p).(1+0.05.p)}. Will take it as exemple
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