Method for diagnosing wheel bearing

A method for diagnosing the presence of failure or abnormal operation of a wheel bearing, the method comprising:

• an acceleration detection step of detecting acceleration information by an acceleration sensor mounted to a rotational central axis of the wheel bearing or at a position radially spaced apart from the rotational central axis and configured to rotate together with the wheel bearing;
• a speed calculation step of calculating speed information based on the acceleration information detected by the acceleration sensor;
• and
• a diagnosis step of diagnosing the wheel bearing based on the acceleration information detected by the acceleration sensor and the speed information calculated from the acceleration information,
• wherein in the acceleration detection step, the acceleration sensor is configured to collect the acceleration information in at least one of a first direction extending radially from the rotational central axis of the wheel bearing and a second direction perpendicular to the first direction on a plane perpendicular to the rotational central axis of the wheel bearing.