DocumentCode
1257465
Title
Model-based leakage detection in a pulverized coal injection vessel
Author
Johansson, Andreas ; Medvedev, Alexander
Author_Institution
Lulea Univ. of Technol., Sweden
Volume
7
Issue
6
fYear
1999
fDate
11/1/1999 12:00:00 AM
Firstpage
675
Lastpage
682
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; blast furnace; fault detection; gas leakage detection; identification; likelihood ratio test; observers; parameter estimation; pulverized coal injection vessel; valves; Blast furnaces; Electrical fault detection; Fault detection; Leak detection; Nitrogen; Observers; Powders; Pressure control; Testing; Valves;
fLanguage
English
Journal_Title
Control Systems Technology, IEEE Transactions on
Publisher
ieee
ISSN
1063-6536
Type
jour
DOI
10.1109/87.799668
Filename
799668
Link To Document