Method and apparatus for calculating degradation degree of a damper clutch of an automatic transmission of a vehicle

An apparatus for calculating a degradation degree of a damper clutch of an automatic transmission of a vehicle, the apparatus comprising:

• a data detector configured to detect a vibration signal of the vehicle according to driving of the vehicle;
• and
• a controller configured to filter the vibration signal of the vehicle according to the driving of the vehicle in order to remove a vibration signal of the vehicle corresponding to a natural frequency of an engine of the vehicle from the vibration signal of the vehicle according to the driving of the vehicle detected by the data detector,
• wherein the controller is further configured to:
• convert the filtered vibration signal into a signal including a sinusoidal wave having a natural frequency of the automatic transmission based on a gear stage of the automatic transmission of the vehicle by using a frequency analysis method, and
• calculate a degradation degree of the damper clutch included in a torque converter of the automatic transmission based on a magnitude of the sinusoidal wave having the natural frequency of the automatic transmission.