Technique of digital signal processing of Raman spectra for hydrocarbon lubricants condition diagnostics based on viscosity estimation

Experimental technique and devices

In the presented paper an ability of application of Raman spectroscopy and modern signal processing methods for hydrocarbon lubricants quality estimation has been considered. Principal component analysis and wavelet filtering methods were used for complex signal processing. On the basis of experimental spectra an ability of lubrication oils viscosity estimation was demonstrated.