Consider the PCM distillation column module of Appendix E. Assume that distillate MeOH composition x D is
Question:
(a) Design a PID controller based on the IMC tuning relations and a reasonable choice for Ïc.
(b) Design a PID controller based on the relay auto tuning feature of the PCM and the Z-N settings.
(c) Simulate each controller for a sudden change in an unmeasured disturbance, feed composition xF ,at t = 10 min, from 0.50 to 0.55 (mole fraction). Which controller is superior?
(d) Attempt to obtain improved control system performance by fine-tuning your better controller for part (c). For the performance criteria, consider maximum deviation from set point and settling time.
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Related Book For
Process Dynamics and Control
ISBN: 978-1119385561
4th edition
Authors: Dale E. Seborg, Thomas F. Edgar, Duncan A. Mellichamp, Francis J. Doyle
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