Actions for Partial control of complex processing systems. Progress report, September 15, 1993--September 14, 1994 [electronic resource].

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Partial control of complex processing systems. Progress report, September 15, 1993--September 14, 1994 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
16 pages : digital, PDF file
Additional Creators
City University of New York. City College, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Control of a Fluid Catalytic Cracker (FCC) was chosen. A concern in control of nonlinear processes is the potential existence of multiple steady states and other stability problems. In an FCC, choice of variables in dynamic matrix cannot be based solely on linear control theory. Considerations requiring a nonlinear model are outlined. Linearized theory is suitable and sufficient for controller tuning and design of algorithm at a given steady state. For evaluating stability considerations and for steady-state control and optimization nonlinear models are essential. While a 2 × 2 matrix properly chosen is sufficient for dynamic control and stabilization, additional variables available should enter the overall control scheme in a slow mode. When dealing with impact of disturbances on process while designing a control circuit, emphasis should be given to slow disturbances and changes in inputs. Fast response, while desirable, is not a main criterion in choosing a dynamic control matrix, unless the fast response relates to all crucial variables in Y{sub p}.
Report Numbers
E 1.99:doe/er/14221--3
doe/er/14221--3
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1994.
"doe/er/14221--3"
"DE94005602"
"KC0401030"
Shinnar, R.
Type of Report and Period Covered Note
Annual; 01/01/1993 - 12/31/1994
Funding Information
FG02-91ER14221
View MARC record | catkey: 14704204