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Cascade control of a distributed parameter process
Author(s) -
Campbell A. S. L.,
Tinker E. B.
Publication year - 1970
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.5450480315
Subject(s) - cascade , control theory (sociology) , loop (graph theory) , controller (irrigation) , process control , isothermal process , process (computing) , inner loop , control (management) , computer science , engineering , mathematics , physics , thermodynamics , agronomy , combinatorics , artificial intelligence , chemical engineering , biology , operating system
The application of cascade control to the regulation of outlet concentration of an isothermal, plug flow, tubular reactor, with first order reaction is considered. The optimum controller parameters and measurement point for the inner loop have been determined for distributed control and initial condition disturbance and vice versa. Optimum performance in both cases occurred with half the distributed lag in the inner loop. Cascade control showed considerable improvement in performance over that obtainable with a single loop system.