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Fig. 6 | Advanced Modeling and Simulation in Engineering Sciences

Fig. 6

From: Parasitic resistance as a predictor of faulty anodes in electro galvanizing: a comparison of machine learning, physical and hybrid models

Fig. 6

Timeseries plot (complete data set) of the rectifier voltage difference (measured–theoretical) or “parasitic voltage” for an exemplary anode couple. The theoretical voltage for the plot is calculated from the physical model (Eqs. 12). The grey points are raw voltage differences (measured–theoretical), the green line is the median value of the raw difference data. The time window for calculating the median is approximately 10 days before and after (rolling median). The dashed vertical lines with the highlighted text present times of anode changes. The orange shaded areas represent the “good segments” used for machine learning model training and validation. The unshaded areas represent “bad segments”, while some low voltage difference areas were left out for our proof of concept

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