Missile H-infinity gain-scheduled autopilot design based on quasi-linear model

It is difficult to design a gain-scheduled autopilot for a missile to realize the adaptive parameter adjustment for the fast varying angle of attack. In this approach, the design model for the missile is the quasi-linear model which is developed by using the state transformation method. The structure of the autopilot is designed based on the linear parameter varying (LPV)/μ control technique; and the H-infinity gain-scheduled autopilot for the missile is designed through the D-K-D iteration. The designed autopilot not only realizes the adaptive parameter adjustment for the slow varying flight Mach number and altitude, but also for the fast varying angle of attack. Nonlinear simulation validates the effectiveness of the proposed approach.