Mathematical Problems in Engineering / 2014 / Article / Tab 5

Research Article

A Fault Diagnosis Method for Rotating Machinery Based on PCA and Morlet Kernel SVM

Table 5

A group of EMD energy entropy of different running states of the actual signal.

Running states

Normal state1.26571.23161.10911.10121.1316
Running for 2 months1.06841. 02011.24521.25661.3910
Running for 4 months0.95060.98960.95971.11660.9259
Running for 6 months0.89230.83690.89490.82830.8675
Running for 8 months0.60310.51080.63920.69670.7042
Running for 10 months0.76630.70950.79530.73250.8034
Running for 12 months0.75090.79930.83310.74080.8296