Author/Authors :
Amiya Kumar Jana، نويسنده , , Amar Nath Samanta and Saibal Ganguly، نويسنده ,
Title Of Article :
Globally linearized control system design of a constrained multivariable distillation column
Latin Abstract :
The goal of this paper is to develop a discrete-time multivariable globally linearized control (GLC) algorithm, which provides low
computational requirements with constraint handling ability. The control strategy is constructed with four elements: a transformer
that accounts for process nonlinearities; an estimator, which observes the required unmeasured states; a variable constraint mapping
optimizer that transforms the input constraints of the nonlinear process into constraints on the manipulated inputs of the globally
linearized system and a quadratic dynamic matrix controller (QDMC) that provides constraints handling ability. The effectiveness of
the designed controller has been tested on a multi-input multi-output (MIMO) nonlinear distillation column through extensive
numerical simulations. The control law showed a high quality performance for set point tracking and disturbance rejection in presence
of parametric uncertainty. The effect of unmeasured disturbance also has been studied through the simulation experiment. In
the comparative study, the proposed GLC-QDMC control technique outperformed the GLC-DMC control law.
NaturalLanguageKeyword :
Variable constraint mapping optimizer , Quadratic dynamic matrix control , Global linearization , Distillation column , State estimator
JournalTitle :
Studia Iranica
