Measuring System for Broadband Vibroacoustic Processes

Continuous and sustainable signals recording (without data omission) is a distinctive feature of 3541 measuring module developed by DYNAMICS SPC.

The article is devoted to the module results. The works result is vibration signal sampling of traction motor of electric train and 250 sec duration and 65 kHz sampling frequencies are shown as a spectrogram.

The spectrogram shows two sympathetic vibration zones of vibration sensor used for the signal obtaining. The peaks, frequencies and their levels which do not depend on electric train speed (rotational frequency) and perturbation action availability (available even when the electric train is stopped) are also marked on the spectrogram.

Harmonic components of vibration signal spectrum are in range from 0 to 10 kHz, in speed rage from 0 to 120 km/h. The frequencies of harmonic components vary directly electrical train speed. The zones showing the electric train speed-up and running-out are clearly distinguished on the given data visualization form.

The system based on 3541 module allows executing vibroacoustic and acoustic emission diagnostics in real-time of machinery including machineries in non steady conditions.

Kostyukov A.V., Zaytsev A.V., Melk V.V., Shchelkanov A.V., Tcurpal A.E. Measuring System for Broadband Vibroacoustic Processes // Devices and techniques for measuring, quality control and diagnostics in industry and transport: refer to. 2nd All-Russian scientific and technology conference with international participation. - Omsk: OSTU, 2013. - P. 26-30

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