热轧机伸缩轴扭矩的建模与控制  

Modeling and Control of Mechanical Impact on Hot Steel Rolling Mill

作　　者：张昆[1] 张竞新[2] 张慈琛[3] 

机构地区：[1]南澳洲大学电气与信息工程系 [2]迪肯大学工程与技术系 [3]墨尔本大学电气与电子工程系

出　　处：《控制理论与应用》2001年第z1期125-128,共4页Control Theory & Applications

摘　　要：热轧机伸缩轴断裂是澳大利亚某钢铁厂经常遇到的问题 .机械故障分析的结果表明 ,故障产生的主要原因是伸缩轴扭矩超高 .而伸缩轴扭矩超高则由钢锭进入轧辊时的机械冲击引起 .因此 ,我们使用系统辨识的方法建立了一个伸缩轴扭矩与轧辊和钢锭速度差之间的定量关系 .仿真试验显示 ,通过减少钢锭咬入时轧辊和钢锭的速度差 ,我们可将伸缩轴的扭矩增益系数控制在适当的范围 。Spindle breakage during hot steel rolling is a long standing problem encountered in an Australian steel plant. Mechanical fault analysis reveals that the possible causes of the problem can be narrowed down to the high spindle torque generated by the mechanical impact when a bar enters the roll bite. This paper uses system identification technique to establish quantitative models which relate spindle torque to the difference between mill speed and bar entry speed. Simulation study shows that by reducing the speed difference, the torque amplification factor (TAF) can be controlled at the manageable level and the spindle torque can be minimized. The result of online experiment base on this concept has been encouraging to date.

关 键 词：热轧过程 机械冲击 过程建模与仿真 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]