Decentralized cascade control of binary distillation columns

The problem of designing a two-point (temperature-composition) linear decentralized cascade controller for binary distillation columns is addressed within a nonlinear robust constructive control framework, yielding: a systematic construction, a simple tuning scheme coupled with a robust stability cr...

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Bibliographic Details
Main Authors: Castellanos-Sahagun, E., Alvarez, J.
Format: Conference Proceeding
Language:English
Subjects:
Applied sciences
Computer science
control theory
systems
Control systems
Control theory. Systems
Couplings
Distillation equipment
Exact sciences and technology
Nonlinear control systems
Numerical simulation
Performance analysis
Performance gain
Robust control
Robust stability
Temperature control
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Description
Summary:The problem of designing a two-point (temperature-composition) linear decentralized cascade controller for binary distillation columns is addressed within a nonlinear robust constructive control framework, yielding: a systematic construction, a simple tuning scheme coupled with a robust stability criterion, an input-output pairing criterion based on RGA-like (relative gain array) analysis, and the identification of the performance limiting factors. The proposed approach is illustrated with a benchmark representative example and numerical simulations, showing that the proposed linear decentralized cascade design can recover the performance of its MIMO counterpart (Castellanos-Sahagun and Alvarez, 2004), which in turns recovers the performance of an exact model-based nonlinear state-feedback composition controller.
ISSN:0743-1619
2378-5861
DOI:10.23919/ACC.2004.1384463