Modeling and control of a spinning missile with blended aero-fin and lateral impulsive thrust

The spinning missile with blended aero-fin and lateral impulsive thrust is investigated. Mathematical models are built and an analysis of the discrete event properties of the lateral impulsive thrust is carried out. Hybrid system control theory is introduced for autopilot design. The autopilot is designed with two operating modes according to the system's behavior and different control strategies are developed with respect to different modes. Fast response and reasonable allocation of energy are achieved by means of switching between these two modes. Finally, simulations are carried out to validate the autopilot and comparison is made between the simulation results and those obtained when the aero-fins are used alone. The results show that the dynamic response characteristic of the missile can be improved by using the blended controller.