铝箔退火炉监控系统研究与设计

【作者】 王刚；

【导师】 张寿明；

【作者基本信息】 昆明理工大学 ， 控制理论与控制工程， 2008， 硕士

【摘要】 本文详细分析了采用PLC控制技术结合工业计算机进行退火炉自动化过程设计的基本原理及方法。论文在分析退火炉特性及工作原理的基础上,分别给出了采用PLC控制技术进行工业过程设计的硬件配置过程和软件设计方法。其中控制器的硬件采用Rockwell/Allen-Bradley(AB)公司的SLC5/03,软件设计分为上位机监控部分和下位PLC程序设计部分,分别由AB公司提供的组态软件RSView32和程序设计软件RSLogix500实现。监控部分由多个组态界面构成,可以将退火炉当前的所有状态信息集中显示到上位机,便于操作人员了解系统全貌和各点的工作状况,并可实时调整系统参数,优化系统输出,大大提高了控制过程的自动化程度,改善操作人员的劳动强度,降低故障率。系统的PLC程序设计利用编程软件RSLogix500,采用梯形图的编程方式,直观清晰,易于修改和调试。在控制算法方面,本论文考虑到退火炉各炉段所具有的耦合性、非线性、大惯性等特征,在传统PID控制基础上,利用PLC的软件编程环境,根据现场工程技术人员的实际经验知识,进一步开发设计了模糊控制器,该模糊控制器能够根据现场不同情况,实现PID参数的自整定,取得了良好的控制效果。经实践运行表明整个控制系统具有良好的可靠性、自适应性和鲁棒性,可以很好的满足铝箔退火炉的生产工艺要求,退火过程中系统运行稳定可靠,操作系统易学易用,在冶金行业具有广阔的应用前景。更多还原

【Abstract】 This paper analyses the basic theory and method in detail about how to apply the PLC and computer to design the automatic control process for the annealing furnace.After analyzing the furnace’s characteristics and working theory, the paper gives the design procedure for both hardware and software about the system. The hardware of controller is made up of the SLC5/03 that made by RockwellAllen-Bradley. For the software design, it includes two parts: supervising software and programming part. They are separately designed by the software RSView32 and RSLogix500 provided by AB Company. Meanwhile, the supervising software is composed of several screens. All the current information comes from the furnace can be centralized to the supervising screens. In this way, the operators can know well about the whole furnace state, modifying the system parameters in time, improving the automation process and deducing the faults. To the programming Software, the paper brings forth the ladder program mode. This method is visual and clear. It. is also convenient to debug. Concerning to the control algorithm, the paper designs the fuzzy controller according to the engineers’ practical experience. This mainly because the traditional PID algorithm can’t solve the coupling、nonlinear、inertial problems of the furnace very well. Therefore, aiming at the heating and temperature-holding process, the paper designs the fuzzy system. As the result, the PID Parameters can be adjusted and the control output can be optimized.The system has high reliability and stability for running, operation system can study and use easily .It has wide application prospect in the metallurgical industry.更多还原