James B. Rawlings Research Group
M.S. Ch.E., University of Wisconsin-Madison, 1997
Model predictive control of sheet and film forming
Master's thesis, University of Wisconsin-Madison, January 1997.
Model predictive control of sheet and film forming processes.
The large-scale, uncertain, constrained nature of sheet and film
processes makes their control especially interesting and challenging.
The general problem of controlling both machine and cross-directional
properties in sheet and film forming processes is treated in this
thesis. A linear dynamic model capable of characterizing both the
process and disturbance dynamics is used. A control scheme combining a
time-varying Kalman filter, a constrained linear model predictive
control and on-line model identification is constructed and evaluated.
Simulation results demonstrate that the scheme can control the MD and
the CD profiles simultaneously and good performance can be obtained
where various types of disturbances, actuator faults and model
mismatches occur in the systems.
University of Wisconsin
Department of Chemical Engineering
Madison WI 53706