Impact of Bearing Faults on Vibration Level of BLDC Motor

This paper presents a comprehensive analysis of bearing fault impact on the vibration of brushless DC motors. This type motors are gaining heightened popularity because of their compact size, low cost, high torque, better control, and easy maintenance. They are becoming increasingly popular in low power applications such as electric scooters and robots. Among others, the bearing related faults are very common in these machines. This is because of the nature of their applications and working environment. In this paper, the effect of different bearing faults on the vibration spectrum is investigated, which can be used as a potential fault indicator. The vibration signals with different faulty bearings are measured in a laboratory setup and the spectrum analysis is done using Fourier analysis.