Gearbox Damage Diagnosis usingWavelet Transform Technique

Diagnosis of the Wear of Gears in the Gearbox Using the Wavelet Packet Transform

T. Figlus, M. Stańczyk, The Silesian University of Technology, Faculty of Transport, Katowice, Poland The paper presents research aimed at diagnosing early cases of wear of gears tooth surface in the gearbox based on measurements of vibration signals and their processing using the wavelet packet transform. Analysis concerned the vibration signals recorded in a test bench experiment, during whic...

Cepstrum Analysis and Gearbox Fault Diagnosis

Multihypothesis Testing Damage Diagnosis of Rotors : Application of Hilbert Transform

In this paper, a combined approach to damage diagnosis of rotors is proposed. The intention is to employ signal-based as well as model-based procedures for an improved detection of size and location of the damage. In the first step, Hilbert transform signal-processing techniques allow for a computation of the signal envelope and the instantaneous frequency, so that various types of nonlineariti...

Study on BSS Algorithm used on Fault Diagnosis of Gearbox

The gearbox is a complicated rotating machinery equipment, in order to realize the gearbox fault early detection and prevention, it is the key to carry out the online diagnosis. This paper used the adaptive variable step-length natural gradient blind source separation algorithm to realize the helicopter gearbox meshing vibration signal and fault vibration signal effective separation. Through th...

Vehicle Gearbox Fault Diagnosis Based On Cepstrum Analysis

Research on damage of gears and gear pairs using vibration signals remains very attractive, because vibration signals from a gear pair are complex in nature and not easy to interpret. Predicting gear pair defects by analyzing changes in vibration signal of gears pairs in operation is a very reliable method. Therefore, a suitable vibration signal processing technique is necessary to extract defe...