The road to plant validation

Authors
Citation
D. Clarke, The road to plant validation, COMP CON EN, 12(4), 2001, pp. 169-178
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
AI Robotics and Automatic Control
Journal title
COMPUTING & CONTROL ENGINEERING JOURNAL
ISSN journal
0956-3385 → ACNP
Volume
12
Issue
4
Year of publication
2001
Pages
169 - 178
Database
ISI
SICI code
0956-3385(200108)12:4<169:TRTPV>2.0.ZU;2-E
Abstract
Effective production requires serviceable unit processes, under stable cont rol with credible sensed data and precise actuation. Validation of these co mponents is not just an aid to safe operation, but can also enhance the ava ilability of the plant. Cost-effective validation uses standard metrics for the intercommunication of results via a network and starts at the sensor a nd actuator level. In particular, greater availability comes from limp-home features that provide a degree of operability even in the presence of faul ts. This can be achieved at the device level, by adjusting a loop's PID reg ulator, by using auxiliary variables and data-fusion, or by the reconfigura tion of a model-predictive controller (MPC). Examples are given of self-val idating (SEVA) field instruments and the effect of adjusting a control loop using SEVA data. Plant validation is a combination of SEVA devices and of change detection based on the residuals derived from an MPC model.