Experimental Investigation of Rotor Vibration by Using Full Spectra from Shaft Mounted Piezoelectric Patches
2019
scientific article
english
- rotor dynamics
- piezoelectric patches
- frequency spectrum
- signal processing
- diagnostics
EN The work considers the applicabilityof signals comingfrom rotor-mounted sensors in machine diagnostics. In theexperiments,such sensors wereimplementedby piezoelectric patches bonded to the surface of ashaft. The laboratory stand also included more common sensors:laser sensors that measuredthe displacement of the central disc,as well asaccelerometers mounted on thesupports. The signalsmeasuredare analysed using theso-called fullFFT method and the spectra are compared. The results show that the signals from piezoelectric sensors canbe processed so that theirspectral content is similar to typical spectra obtained using stator-mounted sensors.
2019203-1 - 2019203-8
The work considers the applicability of signals coming from rotor-mounted sensors in machine diagnostics. In the experiments, such sensors were implemented by piezoelectric patches bonded to the surface of a shaft. The laboratory stand also included more common sensors: laser sensors that measured the displacement of the central disc, as well as accelerometers mounted on the supports. The signals measured are analysed using the so-called full FFT method and the spectra are compared. The results show that the signals from piezoelectric sensors can be processed so that their spectral content is similar to typical spectra obtained using stator-mounted sensors.
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