棒材轧机力能参数采集及数学模型研究
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摘要
轧制压力和轧制力矩是轧制过程中重要的工艺参数,在制定压下规程、工序负荷分析、设备强度校核等方面都具有重要作用。在棒材生产过程中,由于轧件在孔型中的变形过程属于三维不均匀变形,其变形规律较难掌握,轧制压力模型的理论研究比较薄弱。实际工作中对于轧制压力的预报往往以传统经验公式为主,预报精度不高,误差较大。
     本文重点研究了各种类型棒材轧机力能测量传感器的设计与优化方法;结合韶钢中板和水钢棒材的实际生产情况,编写了实时数据采集系统软件;在测量数据统计分析的基础上,应用Matlab分析工具,建立了理论—统计型的数学模型。
     把现场实际情况和弹性元件的设计原则结合起来,设计了一套适合现场操作而且线性度高,重复性好的传感器。
     实时数据采集系统软件与生产实际紧密结合,并应用于实际生产。该软件采用Visual Basic 6.0进行编程,可实现力能数据的储存、显示、分类、组合查询、对比分析及建模计算等功能。
     对采集到的现场数据进行整理,并通过选用多种数学模型进行非线性回归。将回归的理论—统计型数学模型所计算的结果与现场实际情况进行比较,选择与现场实际情况最接近的模型。因此,所选择的模型具有较高的实用价值。
Rolling pressure and rolling torque are important technical parameters in rolling course. They play an important role in establishing depression regulation, analysis of load in working procedure, checkage of equipments' intensity and so on. Because deformation of rolling piece in roll groove is uneven three-dimensional deformation, mastery is difficult, and the theorical research on rolling pressure model lacks. Prediction models of rolling pressure are mostly experiential in practice, these models have low precosion and relatively big error.
    The design and optimization methods of sensor of all kinds of rod mills are researched in this paper; Combining rod factort of Shui Cheng iron and steel Co. and plate factory of Shao Shan iron and steel Co. write a gather real-time data system; on the basis of the statistical analysis of measuring data, using analyse tools of Matlab, has set up the theory-counting mathematics model.
    Combining the design priciples of elastic component and real station, design a suitable reality sensors, further more the sensors have good repeat capability and linearity.
    The gather real-tune data system is close to produce reality, and applying to produce reality. This software is programmed by Visual Basic 6.0, the system can realize the data storage, show, classifying, inquring, comparable analyse and establishing model etes.
    Settle the data measured, and regress non-linearly by some kinds of mathematics model. By comparing the result of measured and calculation by theory-counting mathematics model, choose the model most close to the reality. So the models that are chosen have relatively high practical value.
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