Empirical mode decomposition is a method of signal analysis by decomposing it into a set of orthogonal so-called Intrinsic Mode Functions. It also allows for the determination of so-called instantaneous frequencies. The application of cepstral analysis to the “signal” of instantaneous frequencies allowed for obtaining information on whether the gearbox is damaged, while the “intensity”, i.e., the magnitude of the damage, was investigated by analyzing the value of cepstral coefficients.Gearboxes are a commonly encountered component, including in motor vehicles. Therefore, they should be characterized by high durability and operational reliability. During daily operation, all elements of the drive kinematic chain, including gears, are subject to intense loads. (…)
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Source: Logistyka Magazine 2009
Detection of gear damage using empirical mode decomposition – PDF file for download