Mu-synthesis of robust decentralised PI controllers

Citation
E. Gagnon et al., Mu-synthesis of robust decentralised PI controllers, IEE P-CONTR, 146(4), 1999, pp. 289-294
Citations number
13
Categorie Soggetti
AI Robotics and Automatic Control
Journal title
IEE PROCEEDINGS-CONTROL THEORY AND APPLICATIONS
ISSN journal
13502379 → ACNP
Volume
146
Issue
4
Year of publication
1999
Pages
289 - 294
Database
ISI
SICI code
1350-2379(199907)146:4<289:MORDPC>2.0.ZU;2-0
Abstract
A new tuning method for robust decentralised PI controllers is given. The c ontroller tunings are obtained by minimising a robust performance criterion . The cost function to be minimised is derived from the standard mu-synthes is criterion and it takes into account the process uncertainty and the desi red performance. A constraint on the variations of the controller outputs c an also be added to the performance criterion. The two options, with and wi thout a constraint, respect the specifications in a minimal way to limit th e controller output variations obtained from the standard mu-synthesis crit erion. These two options and the standard mu-synthesis criterion are compar ed on an ill-conditioned two-input two-output (TITO) process example. The g eneralised step response for TITO processes is used to analyse the time beh aviour of closed-loop systems.