Figure 2: Software and data architecture of distillation PEA with integrated ,ML
As described before, the distillation PEA is implemented to the POL via an open standard, the MTP. This architecture can be used additionally to implement the ML in a faster way, as the OPC/UA server and needed variables already exists and the location is completely described in the MTP file. Like this, the ML script is basing on the existing architecture as an add-on for monitoring and classification of the set operation point. Furthermore, it is conceivable to implement a feedback loop as control for the distillation column. The ML script is then acting as a controller of the PEA. For the compliance with the MTP concept, the service of the distillation PEA needs to be adjusted with a new procedure. Within this new procedure, the spinning band speed is not anymore given by the POL, but self-adjusted by the PEA logic with the ML script as a controller itself. However, this is not implemented yet, since the scope was to ensure the applicability of the forecast and classification first.