title: Globally linearized control on diabatic continuous stirred tank reactor: a case study.
abstract: This paper focuses on the promise of globally linearized control (GLC) structure in the realm of strongly nonlinear reactor system control. The proposed nonlinear control strategy is comprised of: (i) an input-output linearizing state feedback law (transformer), (ii) a state observer, and (iii) an external linear controller. The synthesis of discrete-time GLC controller for single-input single-output diabatic continuous stirred tank reactor (DCSTR) has been studied first, followed by the synthesis of feedforward/feedback controller for the same reactor having dead time in process as well as in disturbance. Subsequently, the multivariable GLC structure has been designed and then applied on multi-input multi-output DCSTR system. The simulation study shows high quality performance of the derived nonlinear controllers. The better-performed GLC in conjunction with reduced-order observer has been compared with the conventional proportional integral controller on the example reactor and superior performance has been achieved by the proposed GLC control scheme.
authors.affiliation: Department of Chemical Engineering, IIT Kharagpur, 721 302, India. amiya_jana@yahoo.co.in
authors.forename: Amiya Kumar
authors.initials: AK
authors.lastname: Jana
authors.forename: Amar Nath
authors.initials: AN
authors.lastname: Samanta
authors.forename: Saibal
authors.initials: S
authors.lastname: Ganguly
mesh_terms: D000465:Algorithms; D019149:Bioreactors; D002616:Chemical Engineering / Q000379:methods*; D003198:Computer Simulation; D005246:Feedback; D016014:Linear Models; D008956:Models, Chemical; D012212:Rheology / Q000379:methods*