In order to effectively process the non-stationary vibration signals

a fault diagnosis method for roller bearing

combining the order bicepstrum analysis and the order tracking technique is presented.First

the vibration signal is sampled at constant time increments.And then the time-domain data is re-sampled at constant angle increments and transformed into the angle-domain stationary signal.Finally

the bicepstrum technique is adopted to extract the fault characters of the vibration signal for roller bearing.The experimental results demonstrate the effectiveness of the proposed method.