Dual Fuzzy PID Control for Scan Loop of Infrared Guided Air-to-air Missile Seeker

In order to overcome the problems of small instantaneous FOV angle of missile seeker and low probability of target detection, a method of dual fuzzy PID control of scan loop was presented. Firstly, the scan loop model was set up based on the analysis of servo system. Secondly, the results of normal PID control and fuzzy PID control on scan loop were compared; At last, the dual fuzzy PID control of scan loop was put forward. By simulation and validation, the seeker's dynamic performance can be improved and the detecting probability of target can be enhanced effectively with the method.