Title :
Model-based leakage detection in a pulverized coal injection vessel
Author :
Johansson, Andreas ; Medvedev, Alexander
Author_Institution :
Lulea Univ. of Technol., Sweden
fDate :
11/1/1999 12:00:00 AM
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;
Journal_Title :
Control Systems Technology, IEEE Transactions on
