Signal Based Fault Detection and Diagnosis for Rotating Electrical Machines: Issues and Solutions - Complex System Modelling and Control Through Intelligent Soft Computations - page 284

Table 1 Classi cation accuracy in the case of a finite element motor, changing in grid , the points
number in which the PDF is estimated, and the current signals acquisition time in steady-state
n grid 128 × 128 64 × 64 32 × 32

Acquisition time (s) 0.3 0.15 0.3 0.15 0.3 0.15

%
H 100 100 100 100 100 100
1B 100 100 100 100 100 100
2B 100 100 100 100 100 100
3B 100 100 100 100 100 99.93
4B 100 100 100 100 100 99.89
5B 100 100 100 99.96 100 99.70
6B 100 100 100 100 100 99.87
7B 100 99.98 100 99.94 100 98.19
8B 99.82 95.34 99.89 95.97 99.55 91.41
9B 100 99.74 100 99.53 100 98.56
10B 100 99.43 100 99.32 99.99 99.43
1C 100 100 100 100 100 99.99
2C 99.98 96.89 99.88 95.99 99.56 91.01
3C 99.88 91.71 99.72 95.74 98.48 93.75
4C 99.79 97.61 99.84 98.10 99.93 96.87
5C 99.98 98.96 99.99 98.49 99.96 96.37
6C 100 100 100 100 100 99.98
7C 100 100 100 100 100 99.94
8C 100 100 100 100 100 99.88
9C 100 99.99 100 100 100 99.47
10C 100 99.89 100 99.77 100 96.95
Mean 99.97 99.03 99.97 99.18 99.88 98.15
Label H means healthy motor, labels 1 - 10B mean broken bars with the relative number, labels
1 - 10C mean broken connectors with relative number

Table 2 Classification accuracy in the case of real motors, changing in grid , the points number in
which the PDF is estimated, and the current signals acquisition time in steady-state
n grid

128 × 128 64 × 64 32 × 32

Acquisition
time (s)

0.7 0.5 0.3 0.7 0.5 0.3 0.7 0.5 0.3

%

Healthy 100 100 100 100 100 100 100 100 100

Cracked
rotor

98.82 95.08 77.08 99.00 94.74 86.54 98.29 94.02 81.45

Wrong rotor 98.97 99.47 99.49 99.18 99.36 98.56 99.85 99.41 99.21

Mean 99.26 98.18 92.19 99.39 98.03 95.03 99.38 97.81 93.55

Motor conditions are: healthy, motor with cracked rotor and motor with wrong rotor