INVESTIGADORES
GONZALEZ Alejandro Hernan
congresos y reuniones científicas
Título:
Monitoring process gains used in LP-MPC systems
Autor/es:
BUSTOS, GERMÁN ANDRÉS; GONZÁLEZ, ALEJANDRO HERNÁN; MARCHETTI, JACINTO LUIS
Lugar:
Buenos Aires
Reunión:
Congreso; XXIIIº Congreso Argentino de Control Automático, Buenos Aires, Argentina; 2012
Institución organizadora:
AADECA
Resumen:
Stationary process gains are critical model parameters to determine targets in
commercial MPC technologies. Consequently, important savings can be reached by acceding
to an early prevention method capable of detecting whether the actual process moves away
from the modeled dynamics or not, particularly by indicating when the process gains are not
more represented by those included in the model identified during commissioning stages. A
subspace identification method, which works on closed-loop operation, is used here to
estimate the process gain matrix. The main reason for using this strategy is that the closedloop
monitoring method requires transient regime identification of the process (i.e., not only
stationary, but dynamic identification). In this first version the goal is to achieve a method
capable of identifying those gains of a multivariable model that start moving away from the
original values. The anticipated knowledge of these events could provide a warning to process
engineers and prevent from targeting process conditions with wrong gain estimations. The
regular follow-up of the gain matrix should also help to localize those dynamics needing an
updating identification.