Title :
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
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;
Conference_Titel :
Control Conference (ECC), 1997 European
Conference_Location :
Brussels
Print_ISBN :
978-3-9524269-0-6
