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Interaction in two-variable control systems for distillation columns—I: Theory

✍ Scribed by J.E. Rijnsdorp

Publisher
Elsevier Science
Year
1965
Tongue
English
Weight
638 KB
Volume
3
Category
Article
ISSN
0005-1098

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✦ Synopsis

SmnmarymIn general, multivariable control systems are too complex for even a qualitative description of their behaviour.

However, for linear two-variable control systems with two control lOOps, the situation is more favourable. In this article, the influence of one loop on the other is deduced from a polar diagram. The interaction quotient of the process K=(G12 G21)/(GII G22) in which the G's represent response functions of the process is used as a convenient measure for the degree of mutual influence.

This study is focussed on control systems for continuous distillation columns and gives the theoretical background. The application to distillation columns will be treated in Part II.

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