Mixed H2/H∞ gain scheduled state feedback control for an airborne dispenser pitch-axis autopilot

This paper presents a mixed H₂/H_infin, state feedback control and its application to airborne dispenser pitch-axis autopilot design. Linear matrix inequality conditions that depend only on the vertices of polytope are given for existence of a stabilizing gain scheduled state feedback for linear parameter-varying system in convex polytopic domain, and the solution of the controller is given. The proposed method has the potential to yield less conservative results where the parameters involved can be measured or estimated online because some additional free variables are introduced to LMIs. The augmented system of airborne dispenser pitch-axis is modeled with mixed sensitivity method, applying the proposed method, good transient performance, good steady performance and good capability of disturbance rejection are readily achieved.