In the field of rolling element bearing diagnostics, envelope analysis has gained in the last years a leading role among the different digital signal pro-cessing techniques. The original constraint of constant operating speed has been relaxed thanks to the combination of this technique with the computed order track-ing, able to resample signals at constant angular increments. In this way, the field of application of this technique has been extended to cases in which small speed fluctuations occur, maintaining high effectiveness and efficiency. In order to make this algorithm suitable to all industrial applications, the constraint on speed has to be removed completely. In fact, in many applications, the coincidence of high bearing loads, and therefore high diagnostic capability, with acceleration-deceleration phases represents a further incentive in this direction. This paper pre-sents a procedure for the application of envelope analysis to speed transients. The effect of load variation on the proposed technique will be also qualitatively ad-dressed.

Diagnostic of rolling element bearings with envelope analysis in non-stationary conditions

BORGHESANI, PIETRO;RICCI, ROBERTO;CHATTERTON, STEVEN;PENNACCHI, PAOLO EMILIO LINO MARIA
2013-01-01

Abstract

In the field of rolling element bearing diagnostics, envelope analysis has gained in the last years a leading role among the different digital signal pro-cessing techniques. The original constraint of constant operating speed has been relaxed thanks to the combination of this technique with the computed order track-ing, able to resample signals at constant angular increments. In this way, the field of application of this technique has been extended to cases in which small speed fluctuations occur, maintaining high effectiveness and efficiency. In order to make this algorithm suitable to all industrial applications, the constraint on speed has to be removed completely. In fact, in many applications, the coincidence of high bearing loads, and therefore high diagnostic capability, with acceleration-deceleration phases represents a further incentive in this direction. This paper pre-sents a procedure for the application of envelope analysis to speed transients. The effect of load variation on the proposed technique will be also qualitatively ad-dressed.
2013
Proceedings of CMMNO2013
9783642393471
rolling element bearings; envelope analysis; bearing diagnostics
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/746384
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