Open AccessGain Scheduled Multivariable control of a Continuous Stirred Tank Reactor
Author(s) -
N. Kamala,
J. Balaji
Publication year - 2019
Publication title -
international journal of engineering and advanced technology
Language(s) - English
Resource type - Journals
ISSN - 2249-8958
DOI - 10.35940/ijeat.a1019.1291s319
Subject(s) - control theory (sociology) , continuous stirred tank reactor , decoupling (probability) , multivariable calculus , nonlinear system , mimo , control engineering , controller (irrigation) , operating point , control system , work (physics) , nonlinear control , engineering , computer science , control (management) , mechanical engineering , agronomy , channel (broadcasting) , physics , electrical engineering , quantum mechanics , chemical engineering , artificial intelligence , biology
Most chemical reactors, representing Multi-Input Multi-Output (MIMO) systems, are highly nonlinear and require complex control than single-input single-output (SISO) systems. In the present work, the system is linearized around different operating points. As linear design strategies are intended to work in linear regions, they are employed to evaluate local controller parameters. Decentralized controllers using constant detuning factor and decoupling controllers using static decouplers are designed. A gain scheduler is developed to deal with changes in operating conditions. The performances are evaluated by simulating the nonlinear equations of the system. Decentralized controllers cannot mitigate the interactions due to its structure possessing single loop. It is exhibited that the decoupling controllers offer better control for tracking of desired set point and rejection of load disturbances than those of decentralized controllers. The superiority of the suggested controller has been portrayed by performing simulation study on a Continuous Stirred Tank Reactor (CSTR).