Abstract:A mathematic model is established, with focus on the control of tailplane actuator servo system, based on control theories. Considering its nonlinear and intermittence, a fuzzy-PID control method is brought forward based on fuzzy theory, and the design of a fuzzy-PID controller has been finished, then it is compared with conventional PID control and P control, finally system simulation is conducted with SIMULINK under the effect of unit step signal. The result shows that the fuzzy-PID control has a better capability in speediness, quick response and anti-jamming, it has a good dynamic characteristic and dual advantage of the fuzzy control and the PID control which enhance the integral property of the tailplane actuator servo system and obtain a good control effect and can better meet the requirement of the system.