DocumentCode
2252871
Title
Model-based leakage detection in a pulverized coal injection vessel
Author
Johansson, Andreas ; Medvedev, Alexander
Author_Institution
Control Eng. Group, Lulea Univ. of Technol., Sweden
Volume
3
fYear
1998
fDate
21-26 Jun 1998
Firstpage
1742
Abstract
A method for detecting and isolating incipient leakages in the valves of a pulverized coal injection vessel for a blast furnace process is presented. Nonlinear physical gray-box models of the plant are developed. Values of the unknown parameters are estimated by identification. Observers are constructed for these models and the residuals are used in a generalized likelihood ratio test. The method is successfully tested with real leakages intentionally introduced in the plant
Keywords
fault diagnosis; furnaces; leak detection; observers; parameter estimation; pulverised fuels; statistical analysis; valves; blast furnace process; fault detection and isolation; generalized likelihood ratio test; model-based leakage detection; nonlinear physical gray-box models; pulverized coal injection vessel; residuals; valves; Blast furnaces; Electrical fault detection; Fault detection; Isolation technology; Leak detection; Nitrogen; Observers; Powders; Testing; Valves;
fLanguage
English
Publisher
ieee
Conference_Titel
American Control Conference, 1998. Proceedings of the 1998
Conference_Location
Philadelphia, PA
ISSN
0743-1619
Print_ISBN
0-7803-4530-4
Type
conf
DOI
10.1109/ACC.1998.707305
Filename
707305
Link To Document