Design Of Fuzzy Controller On Missile-borne Antenna Servo Platform

Seeker is one of the core components of precision guided weapons, used to complete the search target identification and tracking. Its stable platform to isolate missile flight disturbance, eliminating the effects of missile body posture changes,keep the antenna beam pointing stability, and ensure high quality imaging SAR system.This paper analyzes a certain type of missile-borne SAR servo system works,key technology and technical requirements, describes the technical aspect of the servo system, and interference analysis.Articles derived mathematical model, combined with experimental fitting method, under control model azimuth axis servo system. And were theoretical design and simulation on the current loop, speed loop and position loop controller with satisfactory control effect. The use of theoretical analysis and experimental testing method to establish friction model for interference isolation missile simulation study, obtained servo system disturbance projectile IF isolation worst conclusions and results in an overload situation, the friction torque is affect the antenna boresight accuracy stable conclusion of the biggest factors.Articles designed fuzzy controller, and the theoretical simulation in MATLAB,and PID controller elastomer interference contrast simulation results prove the superiority of fuzzy control and strong robustness, show the fuzzy control algorithm used to meet project the actual requirements.