变结构模糊PID在轧钢加热炉炉温控制中的应用

Variable Structure Fuzzy PID in the Rolling Mill Furnace Temperature Control

轧钢加热炉炉膛温度的稳定性将直接影响加热炉的加热效率和加热质量。但由于在生产过程中加热炉中的加热坯料需要周期性的进出,加热炉炉门将进行打开、关闭动作,此时,炉膛内的温度会产生很大波动,严重影响加热效果。原来采用的传统PID控制已经不能满足现代控制要求,现提出一种变结构模糊PID在线实时控制炉温,控制效果更加稳定。

The stability of the rolling mill furnace hearth temperature will directly affect the furnace＇s heating efficiency and heating quality. Billet heating furnace in the production process need to be cyclical and out of the Furnace goalkeeper to open, close the action, this lime, the temperature inside the furnace will have a great fluctuations, seriously affecting the heating effect. The original, using the Iraditional PID control can not meet the requirements of modem control is a variable structure fuzzy PID-line real-time control of furnace temperature, and control effect is more stable.