H∞ robust gain-scheduled autopilot design for portable missile

An attitude tracking autopilot is designed based on H_∞ robust gain-scheduled technique for the portable missile which is a typical LPV (Linear Parameter Varying) system. The attitude damping loop is treated as controlled plant, and the pitch attitude is fed back directly to be compared with attitude tracking command. This design idea makes the structure of the autopilot simple and the order of the controller lower, which is convenient for practical engineering. Furthermore in order to implement the controller via the missile-borne computer, the discrete form of the attitude tracking controller is presented. Simulation results show the excellent tracking performance and effectiveness of H_∞ robust gain-scheduled tracking autopilot.