MATLAB tool for Root locus of time-delay systems. ... The tool is able to plot root-locus of open-loop system characterized by transfer function ... den) or tdrlocus(reg, numP, numD, denP, denD). The ...

You can also use root locus plots to plot the Nyquist diagram, which is a polar plot of the open-loop transfer function that shows the stability and gain margin of the system.

For the adjustment of control circuits, it is crucial to verify their stability and the extent of changes in some parameters of the controller, such as proportional gain. The calculation procedure ...

To ensure that your root locus design meets your specifications and works as expected, you should plot the closed-loop transfer function to check its poles, zeros, and stability margins.