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对电机轴承的振动信号进行包络处理后再进行频谱分析，采用rrrrrrrrnFFT-FS 频谱细化技术，识别谱图中细微结构，可有效识别振动低频成rrrrrrrrn分，诊断出轴承故障。
The vibration signal of the motor bearing envelope after the spectrum analysis, the use of FFT-FS spectrum refinement technology to identify the fine structure of the spectrum can be Effective identification of low-frequency vibration into r r r r r r r r n points, the diagnosis of bearing failure.