Relative gain array analysis for uncertain process models

AIChE Journal ◽  
2002 ◽  
Vol 48 (2) ◽  
pp. 302-310 ◽  
Author(s):  
Dan Chen ◽  
Dale E. Seborg
Keyword(s):  
Process Models ◽  
Uncertain Process ◽  
Array Analysis ◽  
Relative Gain ◽  
Relative Gain Array

scholarly journals Studies on Closed-loop Interaction in a Multi-loop Single Tank Control System

2018 ◽  
Vol 7 (3.26) ◽  
pp. 38
Author(s):  
Abhijeet Chourdhary ◽  
Amit Jain
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Transfer Functions ◽  
Test Method ◽  
Step Test ◽  
Flow Loop ◽  
Array Analysis ◽  
Relative Gain ◽  
Relative Gain Array ◽  
Tank System

This paper investigates the interaction between level and flow loop in a single tank system. The data generated is used to generate all transfer functions via step test method. The model generated is then simulated on MATLAB-Simulink and the obtained results are then compared with experimental results for verification. A Relative Gain Array analysis is performed to check the interaction and comment on the pairing.  

Analysis of Process Interactions in Dynamic System Using Frequency Dependent RGA

2011 ◽  
Vol 403-408 ◽  
pp. 895-899
Author(s):  
Amit Jain ◽  
B.V. Babu
Keyword(s):  
Transfer Function ◽  
Process Model ◽  
Transfer Function Model ◽  
Control Loop ◽  
Frequency Range ◽  
Function Model ◽  
Frequency Dependent ◽  
Relative Gain ◽  
Relative Gain Array ◽  
Correct Pairing

A frequency dependent approach to defining a dynamic relative gain array (DRGA) is discussed. The approach assumes the availability of a dynamic transfer function based process model for control loop pairing analysis. Two examples are considered: one in which the traditional RGA (based on steady-state gain matrix) gives the correct pairing recommendation and the other in which the traditional RGA suggests wrong pairings particularly in the frequency range of interest. The calculations pertaining to analysis of control loop pairing is performed using MATLAB (version 7.0.1). An inaccurate indication of the amount of interaction present is discussed. The first example uses 2x2 transfer function model [1] and the second one uses 3x3 transfer function model [2].

Design and Control of Extractive Distillation Based on an Effective Relative Gain Array

2016 ◽  
Vol 39 (12) ◽  
pp. 2339-2347 ◽  
Author(s):  
Honghai Wang ◽  
Yue Li ◽  
Weiyi Su ◽  
Yuzhen Zhang ◽  
Jiajia Guo ◽  
...  
Keyword(s):  
Extractive Distillation ◽  
Relative Gain ◽  
Relative Gain Array ◽  
And Control

Relative gain array for units in plants with recycle

1987 ◽  
Vol 26 (6) ◽  
pp. 1259-1262 ◽  
Author(s):  
Antonis Papadourakis ◽  
Michael F. Doherty ◽  
James M. Douglas
Keyword(s):  
Relative Gain ◽  
Relative Gain Array
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