| 摘要 |
<p>The subject of the invention is a method for detection and automatic identification of defects in rolling bearings applicable in diagnosing rolling bearings and detecting damage in a very early stage of its occurrence. The inventive method in which the vibrations of a bearing in operation are measured, the measured analogue signals are converted to digital data which are filtered using a known method and next shock pulses are detected, whereupon defects present in the tested bearing or bearings are identified, characterised in that the detection of shock pulses is done using the shock pulse likelihood ratio (Ms), defined in this form (Formula (I)), where (Formula II) is the mean square value of signals present in the test intervals at the next filtering with a preset number (L), and (Formula III) is the mean square value of signals present in the reference intervals at the next filtering with a preset number (L), while in order to determine the shock pulse likelihood ratio (MS) a binary vector (p) is constructed, which is used to identify the detected defects.</p> |
