Question: Consider the PCM distillation column module of Appendix E with the following variables: CVs: Overhead Composition (x D ) and Bottom Composition (x B )
CVs: Overhead Composition (xD) and Bottom Composition (xB)
MVs: Reï¬ux Ratio (R) and Vapor Flow Rate (V)
DV: Column Feed Flow Rate (F)
Do the following, using the transfer function models given below:
(a) Design an MPC system using the following design parameters: Ît = 60 s, Q = diagonal [0.1, 0.1], R = diagonal [0.1, 1], P = 40, M = 1.
(b) Repeat part (a) for the same design parameters, but where Q = diagonal [0.5, 0.5].
(c) Simulate the two MPC controllers for a step change in the set point for Overhead Composition (xD) from 0.85 to 0.80.
(d) Repeat part (c) for a step change in the set point for Bottom Composition (xB) from 0.15 to 0.2.
(e) (Optionaldisturbance test) Repeat part (c) for a step change in the Column Feed Flow Rate (F) from 0.025 to 0.03.
(f) Based on your results from parts (c)(e), which MPC controller is superior?
Process transfer function matrix (all times in minutes):
R 0.14e-0.94s -9.0e-18.6s 14s +1 Xp 20s + 1 0.16e-3.7s -14e-0.22s 17s +1 10s + 1
Step by Step Solution
3.29 Rating (178 Votes )
There are 3 Steps involved in it
We repeat 2010 for R 01 01 Q 01 1 and a M 1 and b ... View full answer
Get step-by-step solutions from verified subject matter experts
Document Format (2 attachments)
1602_606321ef1d40f_690521.pdf
180 KBs PDF File
1602_606321ef1d40f_690521.docx
120 KBs Word File
