Cascaded process model based control: Packed absorption column application

Nonlinear, adaptive, process-model based control is demonstrated in a cascaded single-input–single-output mode for pressure drop control in a pilot-scale packed absorption column. The process is shown to be nonlinear. Control is demonstrated in both servo and regulatory modes, for no wind-up in a co...

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Bibliographic Details
Published in:ISA transactions 2014-03, Vol.53 (2), p.391-401
Main Authors: Govindarajan, Anand, Jayaraman, Suresh Kumar, Sethuraman, Vijayalakshmi, Raul, Pramod R., Rhinehart, R. Russell
Format: Article
Language:English
Subjects:
Adaptation
Adaptive control systems
Column packings
Columns (process)
Control
Design
Model-based
Nonlinear
Nonlinearity
Pressure drop
Servocontrol
Servomechanisms
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Summary:Nonlinear, adaptive, process-model based control is demonstrated in a cascaded single-input–single-output mode for pressure drop control in a pilot-scale packed absorption column. The process is shown to be nonlinear. Control is demonstrated in both servo and regulatory modes, for no wind-up in a constrained situation, and for bumpless transfer. Model adaptation is demonstrated and shown to provide process insight. The application procedure is revealed as a design guide to aid others in implementing process-model based control. •Cascaded process-model based control is demonstrated on a pilot-scale unit with nonlinear behaviors.•The controller is tested in servo, regulatory, mode transfer, and constrained situations.•Model adaptation is shown to provide useful information about the process.
ISSN:0019-0578
1879-2022
DOI:10.1016/j.isatra.2013.09.018