The root-locus plot of the pitch rate tracking controller shows the effects of each part of the control system, either open-loop eigenvalues or closed-loop eigenvalues..[^1]
We can sweep the integral gains to see the response of the system..[^1] We can see that the tracking rate increases as the integral error gain increases..[^1] The short-period modes become less stable as they approach the 0 points on the real axis..[^1] The phugoid damping also increases with the increase in integral error gain.[^1]
Adjusting the proportional gain shifts the short-period modes but it does not affect the damping modes.[^1
[[Function 22]] – lead-lag filter in the F-18 pitch rate feedback path
- bendickinsonPitchRateTracking2023[^1]