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Home Publications Articles Methodical basis of peak value assessment for vibration-acoustic signal parameters

Methodical basis of peak value assessment for vibration-acoustic signal parameters

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Diagnostics of certain defects and failures of machines and mechanisms by vibration-acoustic signal parameters requires assessment of the measured signals’ peak values. Taking into account stochastic nature of such signals, the assessment of measuring errors and signals’ peak values considering distribution laws of their momentary values is an urgent task. This paper is aimed at developing a method for measuring errors assessment and calculation of vibration-acoustic signals’ peak values. As the results of analyzing a mathematical system for relative RMS random error which may occur in estimating statistical characteristics of processes there are mathematical relationships used for calculating such estimations for various distribution laws of momentary signal values. In particular, a task on determining a functional connection between asymptotic estimation of quantile sampling estimate and discreet values in a sampling (a signal’s sampling rate) is solved, allowing to justify and verify precision of measuring tools, as well as to evaluate accuracy of measurements of VA signals’ peak values.

 

Kostyukov V.N., Boychenko S.N., Kudryavtseva I.S., Naumenko A.P. Methodical basis of peak value assessment for vibration-acoustic signal parameters // Dinamika Sistem, mechanismov i machin. - 2016. - №1, v.1. - p.51-58

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Tags: shaft sensors automatic diagnostics monitroing systems turbine units shafting bearing defects of rotary assembly and manufaturing. Date: 15.10.2019
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