Fuzzy Mixed Controller Design to an Aircraft

This paper addresses the design of output-feedback H_infin and fuzzy mixed controllers that satisfy global stability, the controllers are robust to deal with the external disturbance of the plant. To an aircraft which is one of the complex nonlinear systems with uncertainty in large flight envelop (LFE), through representing the aircraft plant by a fuzzy dynamic model, so as to design flight control law by applying the H_infin and fuzzy mixed output feedback approach. The simulation results show that the designed fuzzy controllers are better to resist the external disturbance, and robust to parameter perturbation. This method is possible for designing less number and better performance controllers in LFE.