Title :
Detection of incipient clogging in pulverized coal injection lines
Author :
Johansson, Andreas ; Medvedev, Alexander
Author_Institution :
Control Eng. Group, Lulea Univ. of Technol., Sweden
Abstract :
This paper deals with the detection of clogging in the coal injection lines of a blast furnace. A physical model is developed and augmented with a signal that represents clogging. A nonlinear observer is proposed and shown to have any predefined convergence rate. An adaptive detection threshold scheme which is robust against time-varying uncertainties is employed. Simulations and experiments with real data are carried out to illustrate the usefulness of the methods
Keywords :
coal; control system analysis; furnaces; materials handling; metallurgical industries; observers; process control; pulverised fuels; robust control; time-varying systems; adaptive detection threshold scheme; blast furnace process; convergence rate; incipient clogging detection; iron industry; nonlinear observer; physical model; pulverized coal injection lines; robustness; time-varying uncertainties; Automatic control; Blast furnaces; Control systems; Convergence; Fault detection; Helium; Industry Applications Society; Powders; Uncertainty; Valves;
Journal_Title :
Industry Applications, IEEE Transactions on
