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Cannot compute the root locus of models with complex data

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Hi everyone,
I'm trying to use the function "rlocusplot(H)" with a comlex transfer function: H = 1/(s + 1 + 1i), without success.
Could someone please help me. Many thanks!
Best regards

Answers (1)

Paul on 29 Apr 2024
Well, you can always loop through values of K and for each value of K solve for s that satisfies
den(s) + K*num(s) = 0
and plot the resulting values of s.
For simple, or even moderately complex, problems, the function roots would be helpful.
If you don't mind me asking, what kind of problem results in a trasnfer function with complex coefficients?
Tony on 30 Apr 2024
Hi Paul, thanks for answer!
So you mean, there isn't a function like rlocus(H1) from matlab for transfer function with complex coefficients ?
Paul on 30 Apr 2024
Not that I'm aware of. But you can search the doc.

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