Nonlinear H-infinity flight control

This paper presents the application of nonlinear H-infinity state feedback theory to flight control. We divide the flight control into attitude control and velocity control which are different to the conventional longitudinal and lateral control. The new control framework which is based on nonlinear H-infinity state feedback theory solves the 6 D aircraft governing equations directly without linearization. This new flight control methodology has the separation property where we can design the attitude controller and the velocity controller independently. Moreover, it can be shown that controller design can be done before parameter identification of the aircraft.