A METHOD AND DEVICE FOR DETERMINING PROPERTIES OF A BEARING

摘要

There is provided a method for condition monitoring of a bearing in a rotating machine, the method comprising; continuously receiving vibration or acoustic- emission data from the rotating machine; identifying time-domain features in the data using a self-learning algorithm to form a set of features, each feature being represented by a unique waveform, until a converged set of features is reached; storing the converged set of features as a steady-state set of features; in a monitoring state, identifying time-domain features in the data through the self learning algorithm and updating said set of features; comparing the set of features to the steady-state set of features; and if the set of features is different from the steady-state set of features, determining that the conditions of the rotating machine has changed. There is also provided device for performing the method.