Modeling and Optimization for Fault Diagnosis of Electromechanical Systems Based on Zero Crossing Algorithm

Table 1

The grouping of simulation signals.

Index	SNR = 30	SNR = 5	SNR = −5
Simulated normal\no fault	S11	S21	S31
Simulated inner ring fault	S12	S22	S32
Simulated rolling element fault	S13	S23	S33
Simulated outer ring fault	S14	S24	S34