Inverse Gaussian mixtures models of bearing vibrations under local faults
Re-occurrence of vibrational patterns is described as realisation of a point process. The governing point process has inverse Gaussian inter-event times. Mixture inverse Gaussian distribution can be used under variable rotational speed. The proposed model overcomes the deficiency of negative inter-event times. The corresponding point process is shown to be quasi-cyclostationary.
inverse gaussian distribution variable rotational speed localised surface bearing faults fault modelling bayes? factor