提出了一种基于小波分析的HAGC系统传感器故障诊断方法.通过建立系统的MA模型,建立残差信号,利用离散小波变换对残差信号进行多分辨率分析.通过残差信号的故障高低频特性,提取故障敏感特征,实现了传感器故障时间、故障原因、故障程度的诊断.仿真研究表明,该方法凸现故障特征,时域定位准确,不但适用于突变故障,对渐变故障同样有效.
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