Study And Application Of Smart Fan System Based On Fuzzy Control Technology

The precise frequency control for the dust removal blower of steelmaking blast furnace is an effective means of achieving energy-saving, which is a popular technology adopted by most modern iron and steel enterprises. Under the background of the transformation of steelmaking blast furnace system of Shougang Group Changzhi Steel Mill, the paper studies on the frequency conversion control of steel-making blast furnace dust removal blower, and achieves following research results.1) Introduces the basic principles of frequency conversion speed control and the characteristics of smart fan. Infrared temperature sensors, relays, signal acquisition card and industrial control machines are applied to produce the frequency conversion and energy-saving system of dust removal fan, and interface conversion module.2) The software is designed based on fuzzy control and the LabVIEW platform, and the acquisition of temperature sensor signals and the fuzzy control of inverter is realized.3) A serial communication program is designed based on serial communication principles and modbus communication protocol, the acquisition and transmission of two-way data between control center and nodes in the site is realized;4) A joint testing of smart frequency conversion fan system is completed by installing software and hardware system and the setting program frequency threshold and the parameters of invert. The system has status display, data display, storage memory, waveform drawing and fault alarm function modules, which are able to change the parameters according to the conditions of the scene. The function of fuzzy control to the dust removal fan of the steelmaking blast furnace is realized.