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Spatial control of sheet and film forming processes
Author(s) -
Bergh Luis G.,
Macgregor John F.
Publication year - 1987
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450650124
Subject(s) - linear quadratic gaussian control , multivariable calculus , control theory (sociology) , property (philosophy) , process (computing) , computer science , controller (irrigation) , actuator , gaussian process , gaussian , control engineering , process control , control (management) , engineering , artificial intelligence , physics , philosophy , agronomy , epistemology , quantum mechanics , biology , operating system
The general problem of controlling both machine and cross‐directional properties on sheet and film forming processes is treated. A flexible class of linear dynamic‐stochastic models capable of characterizing the process and disturbance dynamics in these systems is suggested. Procedures are presented for identifying these models from data collected from common scanning type sensors. Linear‐Quadratic‐Gaussian (LQG) control theory is used to design multivariable controllers capable of jointly controlling the machine and cross‐directional property variations using both lumped and spatially distributed actuators.