Integration control design for a semi-strapdown seeker missile

Semi-strapdown coordinator is located on the missile body. Because of the existence of the parasitic loop, the semi-strapdown coordinator stable tracking control loop is strongly coupled with the body attitude control loop. As a result, the stability and tracking performance of the coordinator is severely affected. To deal with the stability and tracking problem of the semi-strapdown coordinator, an integration control system is proposed. The control law is designed based on backstepping theory. By choosing an appropriate feedback gain, the stability and dynamic performance of the system can be ensured. Finally, the integration control system is verified by simulation. The results show that the integration controller can solve the coupling problem between the semi-strapdown coordinator stable control and the body attitude control. The designed system is stable and has a good dynamic convergence performance.