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Home Publications Articles Orthogonality of vibroacceleration, vibrovelocity and vibrodisplacement signals in vibration analysis tasks

Orthogonality of vibroacceleration, vibrovelocity and vibrodisplacement signals in vibration analysis tasks

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Search and application for an estimation of a technical condition of machines of orthogonal diagnostic attributes represents rather actual problem as essentially increases reliability of diagnostics. Experience shows, that development of various malfunctions of rotor machines leads to that parameters vibroacceleration, vibrovelocity and vibrodisplacement react to these malfunctions on a miscellaneous. In a practice of vibration analysis and vibrocontrol the signals of vibroacceleration and vibrodisplacement often do not use, including their closely connected with a signal vibrovelocity, that these parameters are connected among themselves by differential-integrated ratio. These cases specify significant narrowing of a range of diagnosed malfunctions at use only one of these parameters.

By analytical researches, by numerical computer modelling and by means of natural experiments it is shown, that at diagnosing such malfunctions as defects of rolling and slidings bearings and, impellers of pumps, tooth gearings, infringement of centering of machines and fastening of units of machines to the bases, among themselves and to other attached designs, vibroacceleration, vibrovelocity and vibrodisplacement it is possible to consider parameters practically orthogonal. Thus, sharing for diagnostics of all three, parameters allows to observe in a spectrum of fluctuation of all frequencies raised in the mechanism.

 

Kostyukov A.V. Orthogonality of vibroacceleration, vibrovelocity and vibrodisplacement signals in vibration analysis tasks // Proceedingds of the 5th International Conference on Condition Monitoring & Machinery Failure Prevention Technologies. - 2008. - p. 794-80

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Tags: diagnostics vibration analysis vibration parameter Date: 01.06.2012
Views: 1222
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