At present some commonly used fault diagnosis methods are based on the large samples data, however we employ the small samples data in the real project , therefore its application has been limited.

• 目前一些常用的故障诊断方法都是以大样本数据为基础的,但通常在实际工程中得到的故障一般都是小样本数据,使其应用受到了一定的限制。