Since acceleration signals with long passing path, loud noise and low Signal-to-Nosie Ratio (SNR) are used to diagnose rolling bearings, it is hard to find an effective analysis on rolling bearings.

• 由于当前滚动轴承振动诊断技术主要拾取加速度信号，该信号传递路径长、噪声干扰大、信噪比低，难以实现对滚动轴承的有效分析诊断。