- 上一篇：布局优化模型为坚实地固化快速成型过程英文文献翻译
- 下一篇：计算机数字控制机床英文文献和中文翻译
plex and time-consuming task that can cause interruptions
in the production line.
2) Change the SISO AGC operation. Correcting the SISO
AGC operation with a computer-based real-time control
of the tilting signal is another option. In this approach, a
multivariable model will consider the coupling between
north and south sides. To compute rolling forces as a
function of the hydraulic actuator positions. An observer
which takes into account the rolls geometry, the slab ge-
ometry, the rolling forces, and the hydraulic actuators
position, can estimate the thickness profile of the out-
going plate. The inverse observer allows us to select pairs
of forces and hydraulic positions which correct the var-
ious unevenness defects. By using both—the inverse ob-
server, and the relation between forces and hydraulic posi-
tions—the controller can compute the tilting signal which
is sent to the AGC in order to replace the human operator
( in Fig. 3). From the practical point of view, this
option was preferred because it makes it easy to install
and test the system without affecting the ongoing produc-
tion.
The control systems must correct the unevenness defects
which the actual AGC does not detect. The plate measurement
at the Finishing Mill at Aceralia Steel show two common
defects in the Hot Rolling Mill outgoing strips.
1) Wedge Defect: When there is a difference between the
north thickness and south thickness of the plate, due to
incorrect roll position, or due to a nonflat incoming plate.
2) Camber Defect: When the length of the strip in the north
is different than the length of the strip in the south, causing
lateral deviation of the strip. The radius of curvature is
used to measure of this defect.
In order to correct these unevenness defects, the behavior of the
compensation system can be summarized as follows.
1) In the first pass, the system tries to achieve a flat
profile in the plate. In order to reach this profile the out-
going unevenness thickness error must be zero.
2) In the last pass, the wedge defect of the ingoing platemust
be low (that is the goal of the previous rolling passes). The
intention is to obtain equal lengths on each side, therefore
the plate curvature must be zero (see Section V-A). To do
that, the controller tries to achieve the same mean thick-
ness value (along the time), for both strip sides. This can-
cels the camber defect, while maintaining a low wedge
profile. 摘要——热轧产品改善后的质量特性，如：厚度轮廓、带钢宽度、平整度、和材料操作属性,其需求日益增长。这个项目的目标是：在Aceralia钢铁公司用现有的热轧机提高产品质量，本文描述了设计和实现一个不均匀厚度的两边都滚条轧钢的实时补偿的监控系统不。设计是基于多变量过程模型,其参数是从轧机上在线使用测量数据计算的。因此,一个计算机系统的开发,纠正自动计控制输出从网上获得轧机情况数据。以前,这个任务是手动完成的,被人类操作。手动校正是单调乏,而且容易出错,因为它是基于视觉检查。此外,该方法会导致臭名昭著的改进在输出带质量,作为校正信号可能被不断应用在联合国——甚至厚度效应是可见的。
指数条款自动计控制、热轧机、多变量系统,系统识别
1．介绍
本文描述了设计和实现的一个监控系统实时补偿的不均匀厚度的两边都滚条。这个项目的目标是提高在Aceralia钢铁公司现有的热轧机。设计是基于多变量过程模型。其参数计算从轧机在线使用测量数据。
在一个炎热的轧机中，轧板厚度降低,从最初的厚度约25厘米到最后5厘米的厚度,最后滚动上工作辊时，通过将板在两个平行移动;参见图1。厚度减少了一系列的通行证。每次通过,在制造中穿过前卸板之前，一个机械螺钉系统调整辊缝。