| Blast furnace air blower is a very crucial and complicated equipment in metallurgical enterprise. In order to ensure it can work in stable, efficient and safe conditions, designing and realizing computer control system is very important. Based on the characteristics of blast furnace air blower, this paper analyzed the structure of control system and control method, designed and optimizd every part of the control system, such as signal acquisition, signal analysis, PID control, output control, safety protection etc. Optimized control system raised controlled resolution, satisfied blower running with reliability, safety and stability, and guarantee blast furnace’s expansion and increase of production.Blower control system is major controlled by logic control and interlock control. From this point, PLC system with strong logic control function is a desired choice. From the performance perspective, PLC product has strong handling ability and stability in analog signal, and can meet the request of this control system’s analog signal and stability. From the system’s structure, PLC system is compatible with industry Ethernet network protocol,providing more space for communication between systems and expansion. Therefore, chose PLC system as the main part of the control system considered both equipment investment and control effects..This paper mainly studied blower control system’s hardware architecture design and transformation the application of control model and realized four units control system networking communication and mutual monitoring, operation.This paper primary work is designing the hardware framework of PLC control system, control system model design communication between blowers.Computer control system of blast furnace blower with research work of this paper has been operated for half year in one Iron&Steel group, it has stable performance and good control effect. |
PDF Full Text Request