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APPLICATION OF ADAPTIVE CONTROL METHODS IN COAL PROCESSING INDUSTRY
Abstract
The coal processing industry uses a various technology for the process control. Various devices and control systems there can be implemented. With the support of automation, the production of final product can be more effective. Modern control system requires an advanced control algorithm on a several control levels (i.e. stabilization, optimization). The paper focuses to the process of coal combustion and coal gasification. Primarily two processes are examined i.e. underground coal gasification (UCG) and coking. In both, a various gases are produced on output. By stabilization of exhausted gassed we can control the transformation coal to the final product (i.e. syngas in UCG or coke in coking). Paper presents stabilization of oxygen in syngas during UCG and stabilization of CO as a combustion product during coking. The nature of both processes requires the adaptation of discrete controller. In the first case, the method of repeated identification was used in order to adaptation of system model and controller parameters. In the second case, the heuristic principle based on optimization method was used in order to find optimal controller parameters. Paper presents the principle of adaptation and also some results from the controller application.
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