Control structure selection via relative gain analysis of partially controlled systems

Author

Haggblom, Kurt E.

Author_Institution

Process Control Lab., Åbo Akademi Univ., Abo, Finland

fYear

1997

fDate

1-7 July 1997

Firstpage

3019

Lastpage

3024

Abstract

A new procedure based on the Relative Gain Array (RGA) is proposed for screening of control structures. In addition to the RGA for the full open-loop system, the RGA for the system under partial control is considered. This Partial Relative Gain (PRG) provides necessary conditions for integral controllability and integrity. The PRG also solves the variable pairing problem in decentralized control more reliably than the conventional RGA, which may fail or be ambiguous for systems larger than 2×2. Furthermore, it can be inferred from the PRG when block-decentralized control should be considered.

Keywords

control system synthesis; controllability; decentralised control; open loop systems; control structure selection; controllability; decentralized control; open-loop system; partial relative gain; partially controlled system; relative gain analysis; relative gain array; variable pairing problem; Arrays; Closed loop systems; Controllability; Decentralized control; Inventory control; Steady-state; decentralized control; integral controllability and integrity; partial control; process control; relative gain array;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (ECC), 1997 European

Conference_Location

Brussels

Print_ISBN

978-3-9524269-0-6

Type

conf

Filename

7082571