14th IFAC Symposium on System Identification, SYSID 2006

SYSID-2006 Paper Abstract


Paper FrA3.3

Ase, Hajime (JFE Engineering Corp.), Takaba, Kiyotsugu (Kyoto Univ.), Katayama, Tohru (Doshisha Univ.)

Subspace Identification of Gasifying and Direct Melting Plant for Control

Scheduled for presentation during the Invited Session "New Developments in Closed-Loop Subspace Identification" (FrA3), Friday, March 31, 2006, 11:10−11:30, Hunter Room

14th IFAC Symposium on System Identification, March 29 - 31, 2006, Newcastle, Australia

This information is tentative and subject to change. Compiled on July 16, 2018

Keywords Closed Loop Identification, Subspace Methods, Process Control


This paper deals with the subspace identification of a high temperature gasifying and direct melting (GDM) furnace with a boiler-turbine plant for power generation. Based on preliminary statistical analyses using data observed under closed-loop operation, we model the system as a multivariable linear system with four exogenous inputs, two control inputs and three outputs. The goal of this paper is to develop a discrete-time state-space model for the gasifying and direct melting plant by using the two-stage orthogonal decomposition (ORT) method (Katayama 2005). Following a brief description of the two-stage ORT method as applied to the present furnace system, we show models obtained by using closed loop data. Some simulation results of closed-loop performance with a newly designed anti-windup compensator are included, together with a result of real closed-loop operation of GDM plant.