基于数学模型的辐射管辊底式热处理炉在线优化控制系统的设计

Design of Control System of On-line Optimization for Heat Treating Furnace of Radiant Tube Roller-hearth Mode Based on Mathematical Model

  • 摘要: 文章以某公司辐射管辊底式热处理炉为研究对象,全面分析了其传热特点,并以辐射管辊底式热处理炉数学模型为基础,实现了辐射管辊底式热处理炉的计算机优化控制。该辐射管辊底式热处理炉在线优化控制系统可实现炉内钢坯位置的实时跟踪、钢坯温度的动态计算、最佳炉温的优化设定及在线反馈修正、钢坯装出炉在线实时修正、上下位机的网络通信及实际生产过程的数据库管理等功能。通过对现场实际运行数据的统计分析表明,该系统运行稳定,计算精度高,数学模型计算值与实际测量值最大相对误差在2%以内,完全满足钢板的热处理质量要求。

     

    Abstract: The paper took heat treating furnace of radiant tube roller-hearth mode of a company as a research object,analyzed its heat-transfer characteristics completely,and realized computer optimization control of heat treating furnace of radiant tube roller-hearth mode based on mathematics model of the heat treating furnace.The control system of on-line optimization for heat treating furnace of radiant tube roller-hearth mode can realize functions such as real-time movement tracking of billet in furnace,dynamic temperature calculating of billet,optimization and setting of optimum temperature and its on-line feedback and modification,on-line and real-time modification of billet output from furnace,network communication between upper and low computer,database management during practical production and so on.Form the statistical analysis of practical running data in production,it can be gotten that the system has stable running performance and high calculation precision,and the biggest relative error is lower than 2% between calculating results of the mathematics model and practical testing results,which shows that the system can meet quality requirement of heat treating of billet completely.

     

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