基于PLC的烧结炉监控系统的设计与实现  

Design and Realization of Sintering Furnace Monitoring System Based on PLC

作　　者：魏玉斌[1] 虎恩典[1] 

机构地区：[1]北方民族大学电气信息工程学院,银川750021

出　　处：《计算机测量与控制》2016年第12期71-74,80,共5页Computer Measurement &Control

摘　　要：通过对银川市某有色金属公司的实地考察,发现其烧结炉控制系统存在严重老化、自动化程度低等问题,加之炉温控制系统本身具有非线性、时滞性等特点,依靠一般的PID控制很难满足企业生产要求;因此,为实现烧结控制系统的最优控制,通过对该公司原有控制系统的基础上进行改造升级,提出了一种PID参数自整定的控制方案,即采用函数描述法继电反馈的方式并结合"Z-N"第二法则整定出PID三个参数;实验采用MatLab仿真器进行算法模拟,选用西门子S7-300系列的PLC作为主控制器,触摸屏作为上位机MCGS软件开发界面,以实现对整个烧结过程的实时监测,最终实现对可控硅调压装置的自动控制;运行效果显示,通过对其烧结炉控制系统的改造升级,明显改善了系统的鲁棒性和自适应能力,有效地降低了烧结时间,企业的生产效益有了很大的提高。By investigating a Nonferrous Metals Company located in Yin chuan, this paper found its sintering furnace control system was difficult to meet production requirements relying on general PID because of some problems like serious aging, low degree of automation, and nonlinear and time--delay which the furnace control system had. So in order to achieve optimal control, this paper proposed a control strate- gy of PID Parameter self--tuning which set out three PID parameters with function description method relay--feedback combined with the Second rule of ＂Z--N＂ by updating sintering furnace control system based on the original one. This paper uses MatLab simulator to make al- gorithm simulation, chooses Siemens S7-300PLC as core controller, touch screen as host computer MCGS Software development interface to achieve monitor the entire sintering process real time, and automatic control of controlled silicon on--load regulation device. The result shows that the robustness and adaptive ability of the system improved significantly, the sintering time reduced and the enterprise＇s production effi- ciency increased greatly.

关 键 词：烧结炉 参数自整定 MATLAB PLC 触摸屏 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]