机载惯导两套配置时的故障诊断研究

分析了飞机惯导采用两套配置时对不同故障的诊断方法,主要分为两类:一类是借助两个平台四个加速度计的输出,诊断陀螺慢漂移过大的问题,文中给出了两平台相对转角及其补偿的实现方法;另一类是借助大气数据系统和解析余度的方法,通过建立故障诊断模型,检测两个互不相关惯导系统的故障,文中给出了方案,指出了难点。

Fault Diagnosis on Dual Sets of Airborne INS

The different fault diagnostic ways of dual sets of airborne integrated navigation system are analyzed in this paper. One way is that the problem of too much slow shift of gyro is diagnosed by the output of four accelerometers on dual sets of platform system. The rotational angle between dual sets of platform and the realizing way of compensation are given. The other way is by the air-data system and analytical redundancy. The faults of dual sets of integrated navigation system are checked by setting up the fault diagnosis model. The scheme is given and the difficulty is pointed out.