Combined A Priori Knowledge And Structural Model Closed-Loop Identification Of High Temperature Industrial Furnaces

The paper describes a systematic approach which combines model identification techniques that are appropriately tailored to accommodate a priori knowledge of plant behaviour. The plant under consideration is a high temperature gas-fired multi-zone industrial furnace. The aim is to obtain a model which replicates the nonlinear temperature control loop to be used for improved control system design. The approach is demonstrated using recorded measurements of closed-loop operational data. Generic features of the developed approach are highlighted.