The Role of Speed-Related Frequencies in Vibration-Based Mechanical Faults Detection in Induction Motor

In induction motors, possible faults can affect the dynamic performance of the motor and reduce the overall efficiency of the motor-driven systems. Therefore, it is crucial to detect potential faults early and accurately. This study investigates the role of speed-related frequencies in vibration-based detection of mechanical faults in induction motors. For this purpose, a test setup is built, and different mechanical faults are created to analyze the frequency spectra of 3-axis vibration data under different torque profiles. According to the experimental results, effective and reliable fault detection can be provided through frequency-related signals (fr (1X) and 2fr (2X)) and their sidebands (2fr+2sfs).