考虑执行器动态的飞行器姿态分散式容错控制

Considering Actuator Dynamic Aircraft Attitude Distributed Fault Tolerant Control

针对飞行器姿态控制系统,基于分散式容错控制框架设计飞行控制系统的作动器损伤和卡死故障检测和辨识单元,以及观测器的辅助系统单元。首先,给出系统在作动器卡死、损伤,操纵面损伤故障下的姿态控制系统。其次,设计一种多观测器的作动器回路故障检测和辨识单元,利用一种决策机制判断当前所发生的确切作动器故障形式。接着,基于自适应滑模观测器隐含操纵面损伤故障和干扰信息,所得到的故障和隐含信息实时反馈给控制器以实现各种类型故障下的容错控制。最后,仿真结果显示所提方法的有效性。

Based on distributed fault-tolerant control framework, actuators damage, stuck fault detection, identification unit and observer-based auxiliary system unit are designed for the attitude control system. Firstly, we give the attitude control system under actuator stuck, lose of effectiveness, and control surface damages faults. Secondly, we design a multi-observer for actuator fault detection and identification, and use a decision-making mechanism to determine current actuator failure modes. Then, an adaptive sliding mode observer is designed for implicit control surface damages and interference information. The reconfigurable controller can achieve fault tolerant by using the information of adaptive sliding mode observer. Finally, simulation results show that the proposed method is effective.