机床诊断技术，三菱主轴变频单元的调试与故障诊断-Machine tools diagnostic technology, mitsubishi spindle frequency conversion unit of debugging and fault diagnosis

频谱选取，一般用于后续向量机的诊断的特征。进行了频谱分析后对每个频带的能量进行分离开。-Spectral selection, generally for subsequent diagnostic feature vector machine. Spectrum analysis conducted after the energy of each frequency band to leave.

The main problem in dustrial application of bearing vibration diagnostics is the masking of informative bearing signal by machine noise. The vibration signal of the rolling bearing is often covered or concealed by other structural vibrations sour

fault diagnostic of induction machine via intelli