共查询到18条相似文献,搜索用时 140 毫秒
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光电液伺服式带材纠偏与对中控制 总被引:6,自引:1,他引:5
本文介绍冶金部自动化研究院开发研制的带材边缘纠偏控制(EPC)系统和对中控制(CPC)系统的构成、特点,并作简要分析.文中还介绍了该系统在两个钢铁厂的实际应用情况。 相似文献
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为了解决带材轧制过程中跑偏的问题,本文介绍了一种基于机器视觉的对中控制系统的原理和硬件、软件系统组成,并着重介绍了基于虚拟仪器开发平台Labview的图像处理模块。本系统体积小,安装方便,两路数据可完全并行处理、用软件措施来替代以前惯用的硬件处理方法,硬件配置灵活、而且成本适中、精度高、响应速度快、抗干扰能力强。 相似文献
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为了解决带材轧制过程中跑偏的问题,介绍了一种基于机器视觉的对中控制系统.及其原理和硬件、软件系统组成,并着重介绍了基于虚拟仪器开发平台Labview的图像处理模块.系统体积小,安装方便,两路数据可完全并行处理、用软件措施来替代以前惯用的硬件处理方法,硬件配置灵活、而且成本适中、精度高、响应速度快、机干扰能力强. 相似文献
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本文的主要内容介绍了阿亨巴赫铝箔轧机板形自动控制OPTIROLL?? i2系统的带材平直度测量原理、信号采集、传递和处理;阐述了带材平直度控制原理和调节平直度的方法;分析了伺服控制调节原理,以及怎样控制带材厚度。 相似文献
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介绍一种超薄带精密轧机的计算机控制系统改造。超薄带精密轧机用于轧制0.01mm~0.5mm的超薄带材,其辊形调节系统是影响带材板形的关键部分。原系统响应慢,可靠性差,难以满足精轧要求。现对该轧机进行改造,采用计算机,将PCM(PulsecodeModulation-脉冲码调制)控制与二次型性能指标最优化控制相结合的控制方法用于轧机的的全面管理与控制,不仅大大提高系统精度与运行可靠性,而且实现调整与控制自动化。目前已投入正常运行。 相似文献
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本文通过对箔轧机带材表面出现周期性条纹状横印的现象分析和问题查找,总结出弯辊控制系统对轧机工作辊及带材表面质量影响的重要性,希望对以后在轧机控制中更好的对弯辊系统进行调试有所帮助. 相似文献
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《Baosteel Technical Research》2010,(Z1):79
SUS304 stainless steel is typical of austenitic stainless steel,which organization is metastable austenite,easily appears work hardening in cold rolling.According to the common process,the max reduction of cold rolling in one stage is below 80%,we try to rasie the max reduction to 90%in one stage (wecalled that "great reduction" ) from the view of cuting cost.Due to the work hardening,great reduction brings lots of problem(the difficulty of flatness control,strip break..etc)。This article analyzed the great reduction from properity of SUS304 steel,mill types,flatness control,rolling technics etc,supplied the corresponding solutions,and formed a sophisticated great reduction theory. This article focuses on the unusual thermal crown of raw materials(ie,abnormal distribution of horizontal thickness) and the rolling force fluctuations in "great reduction" rolling.First,the "distortion" phenomenon which caused by unusual thermal crown of raw materials is explained,wedge-shaped strip In coiling, because of a big difference in thickness on both sides,leads to different compressive stress on both sides of flatness roll,so that the flatness measurement is distorted;Second,the "strip shifting" phenomenon caused by wedge shape of strip is explained,we analysis the stress on both sides of the strip,concluded that the wedge-shaped strip on the coiler will shift to the thick side of the deviation,the amount of strip shifting is related to the wedge level;Because of the characteristics of SUS304,the strip is difficult to be rolled in the last few passes.so the strip breaking is easily occurred,we found the reasonable parameters(rolling speed, cooling oil,tension,etc) to solute that problem;The deviation of rolling force will cause the shape of the roll gap,thus affecting the shape control,especially in the head and tail part of the strip,It is important to minimize the deviation of rolling force;The "great reduction" process provide the favorable flatness(< 8I-unit) and thickness deviation which less than±3 um,with no significant difference between common process.In mechanical properties,the elongation of the great reduction strip is less than common products by 2%-3%,but that can be adjusted through the annealing process improvement.At present,we have been using this technology for mass production,achieving good economic benefits. 相似文献
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The edge shape problem of strip has great influence on the shape control precision, so it is extremely necessary to establish the high-precision strip edge shape model. Based on the theoretical analysis and the practical engineering, a new high-precision shape detection model, which consists of wide channels in the middle of detection roll and narrow channels on both sides, is established to analyse the problem of strip edge shape. Instance data showed that the strip lateral thickness difference was directly related with the shape state of strip, and the strip edge coverage rate and the strip deviation amount had important influences on the shape detection precision, the pattern recognition accuracy and the shape control effect, so the strip edge shape model has become one of the key factors to improve industrial application effect of the shape closed-loop control system in the present situation. 相似文献
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