A general assessment of the quality of motor in addition to the characteristics of the operation to the five senses to judge more motor vibration motor vibration noise situation. Motor vibration motor vibration and noise generated by the motor, are:

    1, the mechanical motor vibration motor vibration and noise, the weight of the rotor unbalance, resulting in a considerable number of revolutions of the motor vibration.

    2, the rotation of the motor shaft bearing, the normal situation is generated outside the natural tone, precision small motor or the situation of the high speed motor, there is no problem. Bearing the natural vibration motor and the motor constitute a portion material resonance, bearing the axial direction of the spring constant in the axial direction of the rotor vibration motor, poor lubrication friction sound problems.

    3, the brush sliding brush DC motor or commutator motor, wiper motor vibration and noise generated.

    4, caused by the vibration and noise of the fan or the rotor of the fluid motor the hood motor vibration and noise of the motor is difficult to avoid, motor vibration and noise of the motor as a whole in many cases about, in addition to the fan blades or the teeth of the core cause gas beep is also necessary to pay attention to the ventilation resonance.

    Electromagnetic motor vibration and noise arising imbalances or imbalances magnetic and electromagnetic force of the air gap of the magnetic circuit wave motor vibration and noise, and the saturation magnetic flux density or magnetic air gap eccentricity caused motor vibration noise.