Control System Design of Missiles with High Angle of Attack Based on Differential Geometry and Variable Structure Control Theory

This article has proposed a nonlinear decoupling control method based on differential geometry and variable structure control theory according to the nonlinear and strong coupling characteristics of missile with high angle of attack. The affine nonlinear model of missile with high angle of attack was firstly established, the accurate linearization and input/output decoupling of system were then performed by differential homeomorphism and feedback transformations. On the basis of this, the variable structure controller was designed to reduce the influence of parameter variation and disturbance. Simulation results indicate that nonlinear decoupling of missile with high angle of attack can be realized through this control method, which is superior due to its good static and dynamic characteristics.