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Time Adjustment of the Hot-Blast Stoves Unit Using Fuzzy Logic

The research presents a time adjustment method of the blast furnace air heaters sequential mode, taking into account the difference in hot air temperature at the end of blast cycles using fuzzy logic. Reducing the hot blast temperature difference allows this parameter to be stabilized at a higher level. Classical regulators are not suitable for solving this problem due to the control object discreteness, the necessity of considering the previous state and predicting the subsequent one. Using methods of fuzzy sets theory and experience of gas engineers allows synthesizing a control system that is able to solve the problem of the hot blast stabilization by controlling periods of heating cycle. The results of the work allow us to reduce the difference in the temperature of the hot blast before switching cowpers. This allows you to stabilize the temperature of the air supplied to the furnace at a higher value. The creation of automated systems for controlling the operating time of the block is poorly researched and implemented in production further research and comparison of various concepts will improve the economy of the blast furnace production and the entire metallurgical enterprise as a whole.