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Cascaded process model based control: packed absorption column application
Anand Govindarajan1, Suresh Kumar Jayaraman1, Vijayalakshmi Sethuraman1
1School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078-5020, USA.
Abstract:
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.
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