On-line monitoring

The statistical model can be connected to a production control system. This allows for real time multivariable comparison of the actual batch with the Golden batch.

apc_trend_diagram

The multivariable trend indicates that the current batch deviates from the golden batch at the beginning of the process. At the same time the statistical package indicates the most likely reason for this deviate. In the diagram below the package indicates that the pH is causing the change with a confidence level of xx%.

rootcause

When the operator changes the set point of the pH (within the allowed limits) the process can be adapted to approach the Golden batch process. This will result in a better process performance of the current batch. Especially when batches are running for many hours or even days, this can result is drastic improvements.