Study on Method of Fault Vibration Diagnosefor Roller Overrunning Clutch

摘要

Fault diagnose of the roller overrunning clutch is a headache problem in engineering at home andrnabroad. This paper introduces a new method to solve the problem by using the wavelet transform to separaternfault signal and further analyzing the impact frequency. The signal local singularities under the waveletrntransform are studied. According to the propagation features of modulus maximums of the fault signal and thernnoise under the wavelet transform different on the scales , and by use of the signal wavelet decompositionrn–reconstruction algorithm,the clutch shell vibration acceleration signal is decomposed, denoised, andrnreconstructed.The signal-to-noise of the monitored signal improved greatly.The fault characteristic signal on timerndomain is positioned.The fault characteristic frequency is picked up. Experiment shows that it is quiterneffective. the result is satisfactory.