Roll damper gains are derived from pole placement methods. There are two parts to the gain, the first places the roll-mode pole to zero. The second puts the roll mode pole to zero scaled with the roll inertia.
$$K_{\dot{p}ep_e}=L{ep_e}-(\sigma_R+\sigma_{IR})$$
The integral gain is
$$j_{\dot{p}ep_e}=\sigma{IR}\sigma_{R}$$
Where \(\sigma_{IR}\) is the integral roll pole, and \(\sigma_R\) is the roll pole. Fast roll poles are required for good handling.
Sources
- “Realization of the Eurofighter 2000 Primary Lateral/Directional Flight Control Laws with Differential PI-Algorithm.” Accessed: Feb. 10, 2024. [Online]. Available: https://arc.aiaa.org/doi/epdf/10.2514/6.2004-4751
Backlinks
Eurofighter Flight Control Laws
Gain Scheduling
Matlab Pole Placement