Independent design of multi-loop PI/PID controllers for interacting multivariable processes

Title
Independent design of multi-loop PI/PID controllers for interacting multivariable processes
Author(s)
이문용트롱부
Keywords
DECENTRALIZED CONTROL-SYSTEMS; CLOSED-LOOP RESPONSES; PID CONTROLLER; DISTILLATION COLUMN; LAGUERRE SERIES; RELAY-FEEDBACK; STEADY-STATE; TIME DELAYS; IDENTIFICATION; PERFORMANCE
Issue Date
201009
Publisher
ELSEVIER SCI LTD
Citation
JOURNAL OF PROCESS CONTROL, v.20, no.8, pp.922 - 933
Abstract
The interactions between input/output variables are a common phenomenon and the main obstacle encountered in the design of multi-loop controllers for interacting multivariable processes. In this study, a novel method for the independent design of multi-loop PI/PID controllers is proposed. The idea of an effective open-loop transfer function (EOTF) is first introduced to decompose a multi-loop control system into a set of equivalent independent single loops. Using a model reduction technique, the EOTF is further approximated to the reduced-order form. Based on the corresponding EOTF model, the individual controller of each single loop is then independently designed by applying the internal model control (IMC)-based PID tuning approach for single-input/single-output (SISO) systems, while the main effects of the dynamic interactions are properly taken into account. Several illustrative examples are employed to demonstrate the effectiveness of the proposed method. (C) 2010 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/23681http://dx.doi.org/10.1016/j.jprocont.2010.06.012
ISSN
0959-1524
Appears in Collections:
공과대학 > 화학공학부 > Articles
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