本文应用小波的方法对一台三级、低速、轴流压气机的动态实验数据进行了分析.所分析的数据点的范围从压气机发生旋转失速前1000转开始,分析结果表明:失速前扰动的出现是间歇性的,即扰动出现、发展、消失、再出现、再发展、再消失.将所有沿圆周方向布置的传感器信号一起分析,失速前扰动形成的团沿圆周方向旋转.而且,越接近失速点,失速前扰动团沿圆周方向传播的距离相对越长.同时,表明结构的不均匀产生在第七传感器和第一传感器之间.
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