基于PCS7的加热炉燃烧控制策略及仿真研究

Furnace Combustion Control Strategy and Simulation Based on PCS 7

针对加热炉控制系统中存在的燃烧效率不高,控制响应延迟大的问题。设计了一套基于某公司SIMATIC PCS7控制系统的加热炉燃烧控制策略。系统针对加热炉燃烧控制中的主要参数:物料出口温度,空燃比,炉膛压力分别采用串级双交叉比值限幅控制策略,模糊控制策略和前馈控制策略进行控制。控制过程采用高级多功能过程实训系统(SMPT)仿真加热炉,利用SIMATIC PCS7控制系统实施加热炉的控制方案并利用上位机软件WinCC进行在线的实时监控。控制过程自动运行,根据控制过程和仿真结果表明,方案安全可靠,控制效果和可行性较好。比较于传统的基于数学模型的加热炉控制策略,方案提供了一种新型的控制策略,在很大程度上解决了加热炉燃烧效率不高,控制响应延迟大的问题。

A furnace combustion control strategy based on Siemens SIMATIC PCS7 is designed to solve the problem of low combustion efficiency existing in the furnace control system,. In the strategy, used double-crossing-limiting ratio control, fuzzy control and feed- forward control to control furnace＇ s main parameters： material temperature, air/fuel ratio and furnace pressure. The system used SMPT to simulate furnace and use SIMATIC PCS7 to implement control strategy. The control process runs automatically and the result shows the strategy is feasibility and has better control performance. Propose a new control strategy and get better performance at the aspect of real-time control and improving combustion eff/ciency compared to the traditional furnace control based on mathematical model.