TY - JOUR
T1 - Nonlinear model reduction and control of high-purity distillation columns
AU - Kumar, Aditya
AU - Daoutidis, Prodromos
PY - 1999/12/1
Y1 - 1999/12/1
N2 - In this article, we address the derivation of reduced-order nonlinear models of high-purity distillation columns with large recycle and internal flowrates. We show through a singular perturbation analysis of the detailed tray-by-tray model that the presence of large internal flowrates leads to a time-scale separation in the column: (i) a fast dynamics corresponding to the individual stages, and (ii) a low-order slow dynamics of the column that governs the overall nonlinear input-output behavior. A description of the low-order slow dynamics of the column is derived and used for the synthesis of a well-conditioned nonlinear feedback controller.
AB - In this article, we address the derivation of reduced-order nonlinear models of high-purity distillation columns with large recycle and internal flowrates. We show through a singular perturbation analysis of the detailed tray-by-tray model that the presence of large internal flowrates leads to a time-scale separation in the column: (i) a fast dynamics corresponding to the individual stages, and (ii) a low-order slow dynamics of the column that governs the overall nonlinear input-output behavior. A description of the low-order slow dynamics of the column is derived and used for the synthesis of a well-conditioned nonlinear feedback controller.
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M3 - Conference article
AN - SCOPUS:0033284181
SN - 0743-1619
VL - 3
SP - 2057
EP - 2061
JO - Proceedings of the American Control Conference
JF - Proceedings of the American Control Conference
T2 - Proceedings of the 1999 American Control Conference (99ACC)
Y2 - 2 June 1999 through 4 June 1999
ER -