Design of Large Angle Attitude Control System for Agile Missile

The control method for the agile turn phase of the air to air missile was investigated that had high off-boresight capability and over the shoulder maneuverability.Reaction jet control system was used as control moment on this type of missile when the angle of attack was large during the agile turn.Using the idea of time scale separation,the attitude dynamical and kinematical systems of the missile were divided into fast subsystem and slow subsystem.Then the control law of each subsystem was designed using the dynamic inversion and variable structure sliding mode control.Finally,under the condition that each portion of the missile was true,and three channels were complete coupling,simulation tests were made.The results show that the control law can completely eliminate the effect of the variation of the structure parameters and the exterior disturbances,and the control system can finely maneuver the missile flight at high angles of attack.The method is strong robustness,easy and feasible with practicability.