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

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,难以满足当前生产要求。本论文欲在该公司原有控制系统的基础上进行改造升级,力求实现最优控制。因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,因此本文提出了一种PID参数自整定的控制方案,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,很好的提高了企业的生产效益,控制策略优良。

Abstract:

This paper found the sintering furnace control system of a Nonferrous Metals Company in Yin chuan is difficult to meet production requirements because of some problems like serious aging, low degree of automation by investigating the company. This paper would upgrade the sintering furnace control system based on the original one to achieve optimal control. Because the furnace control system has characteristics like nonlinear and time-delay, it’s difficult to meet the production requirements by relying on general PID, so this paper proposed a control strategy of PID Parameter self-tuning which use MATLAB simulator to make algorithm simulation, choose Siemens S7-300PLC as core controller, touch screen as host computer MCGS Software development interface to achieve monitor the entire sintering process real time, finally achieve the automatic control for the SCR regulating device. The result shows that this program improve the enterprise's production efficiency, and can meet the control requirements.