On the design of LPV controllers for the F-14 aircraft lateral-directional axis during powered approach

Presents the preliminary design and testing of a linear parameter-varying (LPV) controller for the F-14 aircraft lateral-directional axis. The controller is designed for the powered approach flight envelope, which consists of angle-of-attack/airspeed variations from 2 degrees/182 knots to 14 degrees/126 knots. The design is based on four linearized models at /spl alpha/=2, 6, 10.5, and 14 degrees angle-of-attack. The resulting LPV controller performs well when implemented in a Simulink nonlinear simulation of the F-14 aircraft, in the full order Fortran nonlinear simulation, and in pilot-in-the-loop simulations at the Naval Air Warfare Center at Patuxent River, Maryland.