A Model of the CAS-OB Process for Online Applications. Issue 17 (2015)

• Record Type: Journal Article
• Authors: Rotevatn, Torstein; Wasbø, Stein O.; Järvinen, Mika; Fabritius, Timo; Ollila, Seppo; Hammervold, Andreas; Blasio, Cataldo De
• Is Part Of: IFAC-PapersOnLine. Volume 48:Issue 17(2015)
• Page Start: 6
• Page End: 11
• Publication Date: 2015
• Subjects: Online model -- estimation -- model predictive control -- steel refining -- alloying -- Kalman-filtering; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2015.10.068
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: An existing model of the CAS-OB process has been optimized for online use by carefully selecting state variables, removal of implicit algebraic equations, and reformulating the system as a set of ordinary differential equations. The revised model has been validated with the previous model as well as with process measurements. Further, the model has been implemented in the Cybernetica™ CENIT framework for online applications. Recursive parameter estimation by Kalman-filtering and model predictive control have been demonstrated.