The article gives an example how to improve the existing automated management systems of the sugar factory diffusion station by supplementing it with decision support subsystem that helps the operator to properly assess the situation and take appropriate action. In this case new approaches were used to develop management systems, where on the basis of information, obtained from the automatic control system, the operator (the results of visual inspection of the equipment) and the data of raw materials and factory laboratory were formed recommendations on adjusting technological parameters to maintain quality indicators of diffusion process.
