Nonlinear Disturbance Observer-Enhanced Dynamic Inversion Control of Missiles

Nonlinear dynamic inversion control (NDIC) is one of the promising nonlinear control methods in aerospace engineering. longitudinal dynamics of a missile, this paper a nonlinear disturbance observer based approach enhance its disturbance attenuation ability and robustness against uncertain aerodynamic coefficients. of the proposed nonlinear disturbance enhanced NDIC is established. Its flexibility and are demonstrated by two different choices of the gain function in the observer. Simulation results that the nonlinear disturbance observer based can significantly improve disturbance attenuation and performance robustness of dynamic inversion.