Multi-stand hot rolling mill tension and strip temperature multi

Details Multi-stand hot rolling mill tension and strip temperature multi Multi-stand hot rolling mill tension and strip temperature multi

1994-07-25

1998-08-04

Larson, Lowell A.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72 114, 72 85, 72 122, B21B 3774

Patent

active

057877467

ABSTRACT:
A multivariable controller for a hot rolling mill which uses rolling stand speeds to control exit strip temperature and interstand tension, wherein the controller considers the inherent multivariable nature of the tension and temperature processes relative to individual rolling stand speeds by employing a cross-correlation transfer function matrix which is decoupled by modern control methods to yield more robust, stabler and faster control loops, thereby reducing disturbances and improving product quality.

REFERENCES:
patent: 3820366 (1974-06-01), Smith, Jr.
patent: 4261190 (1981-04-01), Fapiano
patent: 4274273 (1981-06-01), Fapiano et al.
patent: 5054302 (1991-10-01), Yamashita et al.
patent: 5375448 (1994-12-01), Katayama et al.
patent: 5461894 (1995-10-01), Sorgel
patent: 5479803 (1996-01-01), Imanari

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