Article,

Equivalent transfer function method for PI/PID controller design of MIMO processes

, , and .
Journal of Process Control, 17 (8): 665 - 673 (2007)
DOI: 10.1016/j.jprocont.2007.01.004

Abstract

In this paper, a novel engineering oriented control system design method for multivariable processes is presented. By employing the concepts of energy transmission ratio and effective relative gain, an equivalent transfer function matrix for closed loop control system can be obtained. Based on the equivalent transfer function matrix, both off-diagonal decoupling controllers and main loop diagonal controllers can be easily designed using the existing PI/PID tuning rules. The main advantages of the method are that: (1) the overall control system performance is better compared with the existing decoupling control methods; (2) it is very simple w…(more)

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