METHOD FOR SPECTRAL VIBRO-DIAGNOSTICS OF LOAD LEVEL ON TEETH OF STRAIGHT-TOOTHED TRANSMISSIONS OF MOBILE MACHINES DURING TESTS Russian patent published in 2006 - IPC G01M13/02 

FIELD: mechanical engineering.

SUBSTANCE: method includes recording vibration parameters on body of subject transmission. By filtering, source signal of body oscillations is selected. Rounding curve of filtered signal and spectrum of curve are determined. From received data, informative components are picked, as which amplitudes of recorded vibration parameters are utilized. Static characteristics are determined and on their basis load level of teeth is determined. Source signal of body oscillations is selected by band filtering of source signal. Processing of rounding curve of filtered signal is made in following order: smoothing out of curve and determining of main frequency of curve from analysis of its spectrum, determining of number of periods of body oscillation pulses during experiment time, calculating curve derivative and minimums of curve, selecting global minimums of curve, determining separation boundaries and duration of periods between oscillations pulses, determining of impacts energy in each period.

EFFECT: selection of informative components from received data.

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