Fault Diagnosis for Rolling Element Bearing Based on Time Domain Parameter Targets

This paper uses time domain parameters to inspect and diagnose rolling-element bearing' early fault,analyzes the fault mechanism and the vibration characteristics of rolling-element bearing and introduces the methods of vibration signal analysis and fault diagnosis for these components in detail,in the mean while,it compares the characteristics of these methods.Aiming at their typical fault characteristics,we take use of the time domain parameters target to make a diagnosis.Base on Windows interface,we work out the program by using Matlab to compute the time domain parameters targets to diagnose the early fault of the rolling element bearing and simulate rolling-element bearing's fault by using QPZZ-II rolling machine fault-simulation test-bed.The result shows that it is satisfactory to diagnose rolling-element bearing's early fault with the method of time domain parameters.