DocumentCode :
856831
Title :
Optimal profile and shape control of flat sheet metal using multiple control devices
Author :
Guo, Remn-Min
Author_Institution :
Dept. of Autom. Technol., ARMCO Res. & Technol., Middletown, OH, USA
Volume :
32
Issue :
2
fYear :
1996
Firstpage :
449
Lastpage :
457
Abstract :
Recent advances on crown and shape control bring the sheet metal industry into a new era of tighter gauge tolerance and better shape performance. Multiple crown control devices were applied to the mills to enhance control capability, to extend schedule length, and to obtain the optimal mill setup. Given the target interstand crowns, it is easy to calculate control parameters for the mill using a single crown control device. A unique solution is expected, hence no optimal selection. The combination of multiple crown control devices can provide more than one set of set-up parameters to satisfy the required interstand target crowns. Hence the mill can be controlled to minimize undesirable operating conditions, for instance, the usage of maximum or minimum roll bending forces, strip walking due to uneven roll shifting or large pair crossing angle difference. Some special operating cases of dummy and malfunction stands can be resolved thanks to the flexibility and profundity of multiple control devices. This article discusses the optimal crown and shape control for the mill using multiple crown control devices
Keywords :
control system analysis; metallurgical industries; optimal control; process control; rolling mills; shape control; control parameters; crown control device; flat sheet metal; gauge tolerance; multiple control devices; optimal profile control; optimal shape control; pair crossing angle; process controls; roll bending forces; roll shifting; shape performance; sheet metal industry; strip walking; target interstand crowns; Industry Applications Society; Job shop scheduling; Mathematical model; Metals industry; Milling machines; Optimal control; Predictive models; Shape control; Strips; Thermal variables control;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/28.491496
Filename :
491496
Link To Document :
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