The feedfroward plus decoupling control design for TITO system

Abstract

Proportional-Integral-Derivative (PID) controllers are commonly used controllers in industry for their relative ease of use and it also provides the satisfactory performance in industrial processes. It exploits in case of tight performances by employing additional functionalities such as antiwindup, set-point weight, feedforward action. These functionalities are developed for Single-Input-Single-output (SISO) systems. A system with multi inputs and multi outputs are alloyed as MIMO system. Industrial systems like Chemical reactors, Heat exchangers and Distillation column etc. are the best examples of MIMO systems. To perform an operation in SISO system is easier than the operation in MIMO system. The cause of this complication occurs due to the coupling or interactions in between the input and output variables. Hence to minimize the interactions, in this paper we are going to discuss about Decoupling for a TITO system. And the feedforward controller is used for following the set-point.