Optimal internal model control-based decoupled dual-loop control method for boiler steam drum

The decoupled control strategy is a well-established methodology in process control applications. This work-inprogress (WIP) manuscript introduces the decoupled internal model control-proportional derivative (IMC-PD) dual-loop scheme for inverse response process with dead time. The PD controller is constituted on Routh-stability guidelines with the help of Pade’s approximation method. The servo or the primary controller is designed on the IMC principle with a solitary tunable parameter. The equilibrium optimizer (EO) finally obtains the equilibrium locale (optimal controller settings) with the objective of minimizing integral square error. The suggested scheme is tested on a boiler steam level control system through simulations. It delivers appreciable enhancement in performance measures pertaining to transient and steady-state dynamics when compared with prevalent strategies.