EE443 Example

Example of using matlab to plot root-locus for system with characteristic equation 1 + K(s+1)/(s² + 4s + 8) = 0.

Matlab commands typed:

>> rlocus([1 1], [1 4 8]) ;
>> rlocfind([1 1], [1 4 8])

Matlab response:

Select a point in the graphics window

selected_point = -3.2261 + 0.0065i

ans = 2.4722

Matlab plot generated: