飞行控制系统故障诊断与重构技术研究

Fault Diagnosis and Adaptive Reconfiguration for Multi-Redundancy Flight Control System

对于高空长航时无人机高性能要求,提出一种多等级余度飞行控制系统;结合飞行控制系统各组成部分的结构特点,给出了传感器信号的余度信号管理技术,机载计算机通道故障诊断与仲裁技术;伺服子系统故障隔离和控制分配重构技术;试验结果表明该飞行控制系统故障诊断与重构方案设计合理可行,不仅较好地完成了飞行控制系统的余度管理任务,而且有效提高了故障检测率抑制了虚警,保证了系统的可靠性与容错能力。

Flight Control System in HAE UAV must have so strong failure tolerant ability that it can improve the whole system reliabili- ty. A new fault tolerant control architecture is introduced for Flight control System （FCS）. It can solve the problems of massive equipment and large cross link information. Firstly, three parts of the FCS which are Flight Control Fault Tolerant Computer, Redundancy sensor and Servo actuator have been explored. Secondly. The model of control surface failures is built, online fault diagnosis is achieved in flight control system. The experimental results show that the system meets with the fly control system＇s demand of reliability. It shows that online fault diagnosis and fault control are achieved.