Root locus with two inputs?

Hello,

I have a simulink model with two inputs, and I'm trying to get the root locus plot of it. Is this possible?

Thank you.

[Sulaymon Eshkabilov]

Pl., post your simulink model, so we can provide an adequate guidance or an answer.

[Justin Thakar]

Right now it's just this @Sulaymon Eshkabilov:

[Justin Thakar]

@Sulaymon Eshkabilov hoping this helps you answer the question.

Answer 1

[Krishna]

Hello Justin,

Certainly! To get a root locus plot from a Simulink model, follow these steps:

• Linearize your Simulink model to get its linear representation (usually a state-space model) using Simulink Control Design's ‘linearize’ function.
• Convert the linear model to a transfer function if necessary, using MATLAB's ‘ss2tf’ function for state-space models.
• Use the ‘rlocus’ function to generate and plot the root locus of the transfer function.

Please go through the following documentation to learn more,

https://in.mathworks.com/discovery/root-locus.html

https://in.mathworks.com/help/control/ref/dynamicsystem.rlocus.html

Hope this helps.