你好
下面两篇文献是采用方法一的,即:滤波、包络、阶次谱。因为:如果先进行角域重采样,固定频率的共振信号变成变阶次的了,就不能对其进行窄带滤波。是先包络还是先重采样合适我现在不清楚。
1 Envelope order tracking for fault detection in rolling element bearings
2 A new procedure for using envelope analysis for rolling element bearing diagnostics in variable operating conditions