Premium
Backstepping‐based cascade control scheme for batch distillation columns
Author(s) -
MonroyLoperena Rosendo,
AlvarezRamirez Jose
Publication year - 2004
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.10184
Subject(s) - cascade , backstepping , control theory (sociology) , controller (irrigation) , batch distillation , distillation , fractionating column , computer science , control engineering , nonlinear system , compensation (psychology) , overhead (engineering) , fractional distillation , set (abstract data type) , tray , control (management) , engineering , chemistry , adaptive control , chromatography , artificial intelligence , physics , mechanical engineering , psychology , quantum mechanics , psychoanalysis , agronomy , biology , programming language , operating system
Nonstationary dynamics, finite‐time operation, large thermodynamical uncertainty and delayed composition measurements make the control of batch distillation processes a challenging and interesting problem. In this paper, a cascade control design to regulate the overhead composition of a batch distillation column is presented. The controller is designed within the framework of robust nonlinear control with modeling error compensation techniques in conjunction with a backstepping approach. The result is a cascade controller with a master loop that, driven by the composition regulation error, produces a time‐varying set point for the temperature in a certain tray; and with a secondary controller that manipulates the internal reflux ratio to track the time‐varying set point determined by the master composition loop. How to extend the controller design to have multiple slave temperature controllers, to improve the regulation of the overhead composition in a batch distillation column, is also presented. The proposed control approach is illustrated by numerical simulations on a full dynamical model. © 2004 American Institute of Chemical Engineers AIChE J, 50: 2113–2129, 2004