现代控制论改造连轧控制系统提升轧制技术

20世纪最大技术创新之一，是现代控制理论的建立。由它实现了宇航、登月、超高精度导弹、航天器对接、导弹拦截等。现代控制论主要特征是实现多输入多输出复杂系统的最优控制，为此需要有系统的动态数学模型——状态方程。现代控制理论主要有原苏联数学家庞特里西金极大值原理(现代变分法)、美国学者贝尔曼动态规划和卡尔曼滤波等。50年代出现的现代控制论，60年代推向工业应用时，第一个对象就是冶金工业中的连续轧钢机过程控制。

InTouch在1250mm冷连轧控制系统中的设计和应用

主要论述了在1250mm五机架冷连轧计算机控制系统中,人机界面组态软件InTouch9.0的设计思想和编程实例。首先介绍了计算机控制系统的硬件配置,软件的通讯方式;然后详细叙述了组态软件InTouch的应用特色,并给出自编的函数应用实例。

PROFIBUS-DP现场总线在热连轧控制系统中的应用

简述了德龙850 mm热连轧生产线自动化控制系统的配置,重点介绍了PROFIBUS-DP现场总线的应用,PROFIBUS-DP网中PLC主站与直流调速装置、变频器、S7-200、编码器等数据交换,各种厂家的产品在PROFIBUS-DP网做主站或从站的详细配置,PLC控制器对数据的读写。

WinCC及PLC在异型钢连轧控制系统中的应用

WinCC及PLC在三连轧控制系统中应用较为广泛,特别应用于小型异型钢轧制过程,实现汽车挡圈,汽车门铰链型钢,工程机械车轮锁圈,槽圈型钢等产品的稳定轧制。

Mathematic modeling on flexible cooling system in hot strip mill

A novel cooling system combining ultra fast cooling rigs with laminar cooling devices was investigated.Based on the different cooling mechanisms,a serial of mathematic models were established to describe the relationship between water flow and spraying pressure and the relationship between water spraying heat flux and layout of nozzles installed on the top and bottom cooling headers.Model parameters were validated by measured data.Heat transfer models including air convection model,heat radiation model and water cooling capacity model were detailedly introduced.In addition,effects on cooling capacity by water temperature and different valve patterns were also presented.Finally,the comparison results from UFC used or not have been provided with respect to temperature evolution and mechanical properties of Q235B steel grade with thickness of 7.8 mm.Since online application of the sophisticated CTC process control system based on these models,run-out table cooling control system has been running stably and reliably to produce resource-saving,low-cost steels with smaller grain size.

一种芯棒在润滑链上定位方法的分析

烟宝PQF轧机系统上使用的轧制芯棒，在参与一次钢管轧制后，被送回芯棒循环区域，对芯棒进行冷却、润滑然后送回，参与下一次轧制。本文重点介绍芯棒在润滑完成后如何通过传送链反转定位，保证芯棒准确传送入预穿区域，满足生产节奏对设备的要求。