zoom spectrum analysis 细化频谱分析
Besides, at the non-drive-end of the primary shaft, some mechanical fitting in the bearing case were detected loosen, through spectrum-zoom analysis and waveform comparison in the time-domain.
另外，由转频附近细化谱分析及时域波形比较，发现输入轴非电机端轴承座内机件还有径向配合松动故障。
Through the Zoom spectrum analysis of stator curr - ent. such defects as rotor bar break will be recognized.
通过对定子电流进行细化频谱分析，可以准确识别转子断条等一类故障。
Spectrum zoom technique and power cepstrum are two important aided methods in vibration signal analysis.
频谱细化技术和功率倒频谱是振动信号分析的两种重要辅助方法。
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