Rationalizing the Mathematical Model of Boiler Turbine Process with Dead Time

More or less every chemical industrial process suffers from some amount of inherent time delay which is highly undesirable. The presence of this dead time term makes the transfer function model irrational. In the present work, a 2x2 transfer function model of an industrial boiler turbine process with dead time is considered, which after decoupling has been rationalized using Padé approximation. The first, second and third order approximants are determined and validated by comparing open loop step responses.