飞机动力学模型的高度非线性及刹车过程轮胎与地面间摩擦系数的不确定性和强耦合性，造成飞机防滑刹车很难精确控制。论文采用输入输出反馈线性化方法将飞机防滑刹车系统的动力学模型转换成成仿射型，基于反馈线性化的防滑刹车滑模变结构控制律对原有控制算法进行改进。仿真结果表明：在结合系数较小的冰跑道环境下，滑移误差明显降低；控制方法和控制律合理有效。%It is difficult to achieve accurate control of the aircraft anti-skid brake system due to three reasons:(1) that the model of aircraft dynamics is highly nonlinear;( 2) that the coefficient of friction between the tires and the ground during braking process is uncertain;( 3) that the coupling is strong .This paper converts the dynamic model of aircraft anti-skid braking system into affine model using the input-output feedback linearization and designs a sliding mode variable structure control law based on feedback linearization for anti-skid braking system;the control law designed by us is an improvement over original control algorithm .Simulation results and their analysis show pre-liminarily that:( 1) under the ice runway with smaller coefficient , tire slip error is decreased markedly;( 2) the designed control law is reasonable and effective .
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