Management of Uncertainty by Statistical Process Control and a Genetic Tuned Fuzzy System

Figure 1

Comparison of cell count (YCC) of historical batches and model output. The circles (o) show the YCC model output in mmol/L, the solid line (—) is the experimental trajectory of YCC in mmol/L, and the dashed line (- - -) denotes the temperature in K. The duration, respectively, batch length, varied between 24 and 46 hours. Initial conditions of yeast cell concentration varied in between 4.1 mmol/L and 14.9 mmol/L. The final state of the yeast cell concentration showed a range from 146.3 mmol/L to 191.9 mmol/L. The temperature varied from 283 K to 291 K.