A Caltech Library Service

Robust control of ill-conditioned plants: high-purity distillation

Skogestad, Sigurd and Morari, Manfred and Doyle, John C. (1988) Robust control of ill-conditioned plants: high-purity distillation. IEEE Transactions on Automatic Control, 33 (12). pp. 1092-1105. ISSN 0018-9286. doi:10.1109/9.14431.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Using a high-purity distillation column as an example, the physical reason for the poor conditioning and its implications on control system design and performance are explained. It is shown that an acceptable performance/robustness tradeoff cannot be obtained by simple loop-shaping techniques (using singular values) and that a good understanding of the model uncertainty is essential for robust control system design. Physically motivated uncertainty descriptions (actuator uncertainties) are translated into the H∞/structured singular value framework, which is demonstrated to be a powerful tool to analyze and understand the complex phenomena.

Item Type:Article
Related URLs:
URLURL TypeDescription
Doyle, John C.0000-0002-1828-2486
Additional Information:© 1988 IEEE. Reprinted with permission. Manuscript received December 2, 1986; revised May 19, 1988. Paper recommended by Associate Editor, D. Seborg. This work was supported by the National Science Foundation and by Norsk Hydro.
Funding AgencyGrant Number
Subject Keywords:chemical industry; control system synthesis; distillation
Issue or Number:12
Record Number:CaltechAUTHORS:SKOieeetac88
Persistent URL:
Official Citation:S. Skogestad, M. Morari and J. C. Doyle, "Robust control of ill-conditioned plants: high-purity distillation," in IEEE Transactions on Automatic Control, vol. 33, no. 12, pp. 1092-1105, Dec. 1988. doi: 10.1109/9.14431
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9598
Deposited By: Archive Administrator
Deposited On:12 Feb 2008
Last Modified:08 Nov 2021 21:00

Repository Staff Only: item control page