According to the analysis of parafoil homing trajectory, the mathematic description of the trajectory tracking control problem was formulated based on the state space representation of parafoil system. Considering that the parafoil is subject to greater external disturbance and uncertainty when it is in homing flight, the nonlinear predictive control based on Fuzzy Disturbance Observer ( FDO) was derived and the parafoil homing system trajectory tracking control law was built up. The simulation result indicates the good robust performance and anti-interference performance of the flight control system.%在翼伞系统的状态空间模型的基础上,分析了翼伞的归航轨迹,给出翼伞轨迹跟踪控制问题的数学描述.针对翼伞归航飞行过程中,受到较大的外干扰及不确定性影响,提出基于模糊干扰观测器(FDO)的非线性预测控制策略,设计了翼伞归航系统航迹跟踪控制器.通过仿真试验,表明该飞控系统具有良好鲁棒特性和抗干扰特性.
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