A crystallize is used to separate a pharmaceutical product from the fermentation extract. The three manipulated variables
Question:
(a) Calculate the RGA, and determine the appropriate airings for SISO feedback control. Comment on the role of dynamics in your decision.
(b) Using the IMC tuning rules, design three PI controllers for this process.
(c) Simulate the process response to a step set point, separately, in each of the controlled outputs [use a magnitude of +10% (relative) change]. Next, simulate the response of the system to a simultaneous pair of step changes (again, use a magnitude of +10% relative) in each of the second (purity) and third (product rate) controlled outputs. Try to tune the controller to improve the transient response to the simultaneous step changes.
Step by Step Answer:
Process Dynamics and Control
ISBN: 978-1119385561
4th edition
Authors: Dale E. Seborg, Thomas F. Edgar, Duncan A. Mellichamp, Francis J. Doyle