Fractional-order model of wine

Abstract

Electrical impedance spectroscopy is used for characterizing several types of wine and the experimental results are compared with those of chemical analysis. The electrical impedance of wine is measured and modeled by means of fractional transfer functions. The model is compared with standard chemical analysis, showing strong correlation between the two distinct descriptions. Hierarchical clustering is adopted for analyzing and visualizing the relationships embedded in the data. The results demonstrate that fractional models describe wine adequately with a reduced number of parameters.