Tuning GMC Controllers Using the ATV
Procedure
Authors:
Scott E. Flathouse
James B. Riggs
ABSTRACT
A procedure is developed for applying ATV tuning to GMC
controllers. A nonlinear two input/two output test problem, which
resembles an exothermic CSTR, is used to test the effectiveness of
the new tuning procedure.
The effect of model mismatch on the tuning for the GMC controller
model is studied using dynamic and steady-state controller models. In
both cases, a GMC controller tuned with the ATV tuning procedure is
compared with a GMC controller with optimal tuning. In the case of
GMC based upon dynamic models, the ATV tuning procedures with on-line
detuning is shown to provide an excellent approach to the optimal
performance over a significant range of model mismatch. While the
ATV-tuned GMC controllers which use steady-state models yield control
performances that are clearly inferior to the ones based upon dynamic
models, ATV tuning provides an adequate approach to the results of
the optimally tuned controllers.
Publication Information:
Submitted to Computers and Chemical Engineering
Dec. 1994
Corresponding Authors:
James
B. Riggs
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