Detection of incipient clogging in pulverized coal injection lines |
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Authors: | Johansson A. Medvedev A. |
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Affiliation: | Control Eng. Group, Lulea Univ. of Technol.; |
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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 |
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