Comparative Study of Time-Frequency Decomposition Techniques for Fault Detection in Induction Motors Using Vibration Analysis during Startup Transient

Table 1

Detectability in decibels of the comparative study of different techniques for identifying faults in an induction motor.

Condition	STFT	TFDG	TFMS	MUSIC
Healthy	10	7	11	12
Broken rotor bar	12	9	13	21
Mechanical unbalance	15	10	6	28
Bearing fault	16	12	21	32