Shock and Vibration / 2016 / Article / Tab 2

Research Article

A Novel Method for Mechanical Fault Diagnosis Based on Variational Mode Decomposition and Multikernel Support Vector Machine

Table 2

The characteristic parameters in frequency domain.

NumberFeature expression

6
7
8
9
10
11
12

is the frequency spectrum of signal , ,   is the number of spectrum lines, and is the frequency of the kth spectrum.