The Rolling Bearing And The Gear Vibration Signal Analysis And Fault Diagnosis Method

Rolling-element bearing and gears are common components in machineries. Their running state will influence the performance of the whole machine directly. In this paper, the fault mechanism and the vibration characteristics of rolling-element bearing and gears are generalized, and the methods of vibration signal analysis and fault diagnosis for these components are introduced in detail, in the mean while, the characteristics of these methods are compared, and then, give a new method of demodulation, Correlation-Envelope analysis. Aim at their typical fault characteristics, we take use of both time-domain analysis and spectrum analysis, base on Windows interface, and use object-oriented Delphi5.0, work out a software system named BGMDI .0 for the vibration signal analysis and fault diagnosis. The experimental verification of this software system is validated by experiment. The results show that there will be good effect to use the time-domain vibration signal analyses, with the help of the spectrum analyses, to diagnose the fault of rolling-element bearing and gears.