Due to its simplicity

utility and easy application

PID controller is used largely in classical automation systems.However

the performance of the controller can not satisfy complicated nonlinear systems such as aircraft engines.This problem can be solved on the basis of the fuzzy control theory.It is very difficult to formulate accurate models for aircraft engines.In consideration of this difficulty

a parameter self adapting fuzzy PID controller is put forward for aircraft engines.The full envelope simulation results indicate that not only the fuzzy PID controller does not rely on the precisely accurate models but also possesses favorable dynamic and static control performances.