一种基于观测器的自修复飞行控制系统设计

The Design of Self-Repairing Flight Control System based on Observer

故障检测与隔离(FD I)、控制律重构是自修复飞行控制系统设计的重要内容。在自修复飞行控制系统设计中,利用观测器,设计了针对传感器的故障进行检测的方法,可使检测效果在一定的条件下,对系统参数变化不敏感,具有较好的鲁棒性;此外,当飞机操纵机构发生故障时,利用观测器,设计了基于线性模型跟随控制进行飞行重构控制的方法,使得当状态变量不能测量时的控制系统得以物理实现。最后,给出了仿真实例,结果表明了该方法的可行性和有效性。

Fault detection, isolation control reconfiguration are main designing content in self-repairing flight control system. In this paper an observer is used to detect sensor fault while being insensitive to parameter variations on definite condition, on the other hand the control reconfiguration method based on Linear model following also utilizes the designed observer. Therefore the method is more practical than existing method. The simulation example shows the effectiveness and feasibility of the proposed control law.