Comparison of Methodologies for the Detection of Multiple Failures Using Acoustic Images in Fan Matrices

Table 3

SVM accuracy rates of the individual faulty fan detection methodology with two faulty fans working situation of the matrix.

Individual faulty fan detection methodology: two faulty fans tests		Accuracy rate (%)
Global		87.9
Two faulty fans separation
Case A: horizontal/vertical step distance (no central fan)		89.5
Case B: horizontal/vertical step distance (with central fan)		89.3
Case C: diagonal step distance		84.3
Case D: knight movement distance		89.6
Case E: row/column distance		84.7
Case F: diagonal distance		92.5