A Simple Feedback Control Approach for Output Modulation of Spatiotemporal Patterns in a Class of Tubular Reactors

Tubular chemical reactors can support spatiotemporal patterns. Pattern modulation in reactive systems may be of major importance for adequate operation of some industrial applications. In this work, we introduce a robust control approach for the output regulation and tracking of spatiotemporal patte...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2013-12, Vol.52 (49), p.17517-17528
Main Authors: Puebla, Hector, Hernandez-Martinez, Eliseo, Hernandez-Suarez, Rogelio, Ramirez-Muñoz, Jorge, Alvarez-Ramirez, José
Format: Article
Language:English
Subjects:
Control
Dispersions
Feedback control
Mathematical models
Modulation
Oscillations
Reactors
Tracking (position)
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Summary:Tubular chemical reactors can support spatiotemporal patterns. Pattern modulation in reactive systems may be of major importance for adequate operation of some industrial applications. In this work, we introduce a robust control approach for the output regulation and tracking of spatiotemporal patterns in a class of tubular reactors at a desired position. The control design includes a state estimator of lumped uncertain terms, which is coupled with an inverse model-based feedback control that assigns a desired output closed-loop behavior. The result is an efficient controller that is robust against feed disturbances while introducing good output regulation and tracking properties. The controller is implemented via numerical simulations in three benchmark tubular reactors displaying spatiotemporal patterns: (i) spatiotemporal periodic oscillation in a tubular reactor with axial dispersion, (ii) chaotic spatiotemporal patterns in a tubular reactor with recycle, and (iii) spatiotemporal periodic oscillations in the Belousov–Zhabotinseky reaction–diffusion system.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie4013562