The selection of time domain characteristic parameters of rotating machinery fault diagnosis

In order to choose the rotating machinery fault diagnosis characteristics accurately, in this paper, a kind of choice method of fault diagnosis characteristics was put forward based on the time domain statistical analysis. Through analysis the probability distribution of the time domain dimensionless characteristic parameters, choose the parameters witch is obviously different from others and used as rotating machinery´s fault diagnosis characteristic parameters. Through MATLAB simulation, we can draw a conclusion from the results that this method can improve the efficiency and accuracy of fault diagnosis effectively.