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

Qiang Xiong

doi:10.1016/j.jprocont.2007.01.004

Return

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

2007-09-01

118

PRE

DOI：10.1016/j.jprocont.2007.01.004

Original

Original request for help

Save

Abstract

En 中文

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 which can be easily understood and implemented by field control engineers; and (3) the control system is robust, it can still work with satisfactory performance even under significant model mismatches. Several multivariable industrial processes with different interaction characteristics are employed to demonstrate the simplicity and effectiveness of the design method. (c) 2007 Elsevier Ltd. All rights reserved.

Keywords:

MIMO processes

dynamic relative gain array

energy transmission ratio

effective relative gain array

relative frequency array

equivalent transfer function matrix

PI/PID

decoupling control

diagonal dominance

robustness

AI Summary

Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.