On the selection of classical advanced controllers for TISO systems

There are basically three approaches regarding classical advanced controllers for TISO systems, these being adopting independent controllers, split-range control, and mid-ranging control (also known as valve position control). Despite the recent attention that has been devoted to improving such classical strategies, there is a lack of a systematic method for choosing the appropriate control approach for a given TISO system. Aiming to address this issue, the present paper provides insights and recommendations for selecting classical advanced controllers for TISO (two-input, single-output) systems in process control, by presenting a novel decision scheme. The study also presents illustrative examples of the three strategies and argues in favor of the validity of the proposed decision method.