Robust stability analysis for a cruise missile

A global controller design methodology for a flight stage of the cruise missile is proposed.This methodology is based on the method of least squares.To prove robust stability in the full airspace with param-eter disturbances,the concepts of convex polytopic models and quadratic stability are introduced.The effect of aerodynamic parameters on system performance is analyzed.The designed controller is applied to track the over-loading signal of the cruise segment of the cruise missile,avoiding system disturbance owing to controller switching.Simulation results demonstrate the validity of the proposed method.