基于分散推理结构的加热炉钢坯温度分布模糊控制

Fuzzy control method based on decentralized reasoning structure for billet temperature distribution

针对钢坯加热炉系统所具有的典型分布参数特点,提出了一种基于分散推理结构的钢坯温度分布模糊控制方案.首先,将炉内钢坯温度偏差分布作为模糊推理系统的输入信息;然后,对于每一个炉温调整点,通过一组二维模糊控制器,产生一组与钢坯温度偏差分布对应的炉温补偿控制分量;最后,综合各控制分量获得各调整点处的炉温补偿量.仿真算例表明,该方案能够有效地保证钢坯按理想加热曲线完成加热过程.

Due to the typical distributed parameter characteristics of billet reheating furnace, a fuzzy control method based on decentralized reasoning structure for billet temperature distribution is proposed. For every set-point, the furnace temperature compensation values corresponding to a set of billet temperature deviation distribution are obtained by a set of two-dimensional fuzzy controllers whose input information is the temperature deviation distribution of billets in furnace. Then the furnace temperature compensation value is acquired by integrating each compensation values. Simulation results show that this methods can ensure the billets to complete the heating process according to the ideal curve effectively.