Design of missile autopilot controller by use of optimized Fuzzy/PID combined method

Since the fuzzy control does not depend on the accurate mathematical model of the controlled device and has strong robustness, furthermore, PID controller parameter can be changed conveniently and is simply in engineering realization. The author designed a digitized missile autopilot controller bases on advanced parameter self-adjusting and interpolation online by use of Fuzzy/PID combined controlling means. The method of interpolation online is utilized to eliminate quantization error and adjusting dead zone before table-lookup calculation of fuzzy controller. The fuzzy and PID control is also part of the control process, but their weight that participated in the control change according to the change of the error. at last, By using Matlab simulation software and visual modeling tool Simulink, build the simulation model of Fuzzy/PID controller, the simulation result indicates that modified controlling means can get high-precision trace command and has powerful capacity of resisting disturbance.