硅钢常化退火炉炉压控制模型的开发应用

炉内压力是连续退火炉的重要控制指标，炉压波动会对带钢的质量和性能造成重大影响。现有的连续退火炉炉压控制一般都采用常规PID控制方法，但传统的连续退火炉子炉压较难同时兼顾炉况快速调整以及炉况稳定控制的工艺要求。文中采用炉压控制模型的方法，以炉区的炉温，烧嘴功率，煤气，空气流量设定值、实际值等为输入量，采用多变量预测控制算法来计算出当前最优的废气风机转速，来实现退火炉炉压高精度调整和稳定控制。 

Development and application of silicon steel normalizingannealing furnace pressure control model

Furnace pressure is an important control index of annealing furnace. Furnace pressure fluctuation will have a significant impact on the quality and performance of products. The pressure control of the existing continuous annealing furnace generally adopted a conventional PID control method, which caused the traditional continuous annealing furnace pressure could not take into account the requirements of stability and rapidity at the same time. A new control method of furnace pressure control model was adopted, which took the set value and actual value of furnace temperature, burner power, gas and air flow in the furnace area as the input, and used the multivariable predictive control algorithm to calculate the current optimal exhaust fan speed, so as to realize the control of furnace pressure stably and improve the control accurately.