The model of hydraulic actuator servo system was founded and the double—fuzzy controller also was designed to the nonlinear factors in working environments. The double —fuzzy controller uses the "first accommodativeness" controller to get expeditiousness, and exactness of the system can be satisfied through the "second accommodativeness" controller. Then, the dynamic simulation of the model was carried out by Simulink. The result of the simulation indicates that the accommodative time is cut by 0. 4s and the time of accommodativeness. after being got disturbance is cut by 0. 16s. The double—fuzzy controller can have the better capability than the PID and the P in speediness and anti —disturbance and offers a new way to solve the unclear factors in working environments.%为了解决飞机舵机在实际使用过程中的非线性因素,建立了液压舵机伺服系统的数学模型并设计了一种双模糊控制器；该控制器利用“粗调”模糊控制器实现系统快速响应,利用“细调”模糊控制器满足系统准确性要求；运用Simulink对系统模型进行仿真；仿真结果表明,双模糊控制与PID控制、P控制相比,使系统的调节时间缩短了0.4s,受到干扰后再次稳定的时间提高了0.16s,使系统具有更好的快速性和抗干扰能力,为解决实际中的不确定使用因素提供了一种思路.
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