Plate form expansion feeding back closed-loop control system and method for cold continuous rolling machine

Abstract

The plate form expansion feeding back closed-loop control system for cold continuous rolling machine includes a frame combination, a last stage frame, a plate form measuring device, a plate form target curve setting deice and a last stage frame closed-loop access node. It features that it has also plate form optimizing device, frame load distributor of the plate form optimizing device and front frame expanding closed-loop access node; that the plate form measuring device, the plate form target curve setting deice, the plate form optimizing device, frame load distributor, the last stage frame closed-loop access node and the last stage frame are connected successively to constitute the plate form feeding back closed control loop; and that in the plate form feeding back closed control loop, the frame load distributor is connected through the front frame expanding closed-loop access node to the front stage frame combination to constitute the plate form expanding feedback closed control loop combination.

Description

Technical field [0001] The invention relates to a strip steel cold rolling device and a cold rolling control method, in particular to a cold tandem rolling mill flatness extended feedback closed loop control system and an extended feedback closed loop control method for the strip steel shape. Background technique [0002] At present, in the rolling process of strip steel using a cold continuous machine, such as figure 1 In the configuration shown, only the final frame 7 has a feedback closed-loop control structure to adjust the strip shape of the strip 9, such as CVC (Continuously Variable Crown), DSR (Dynamic ShapeRoll), UC ( Universal Crown universal crown rolling mill), HC (High Crown high precision crown rolling mill) and VC (Variable Crown variable crown rolling mill), etc. At present, almost all cold tandem rolling mills in the world have a set of flatness measurement without exception. The device can only achieve closed-loop control of one rack. figure 1 When the strip i...

AI Technical Summary

Problems solved by technology

Now in order to improve the flatness of the finished steel strip, if each frame in the front-stage frame group 6 has a closed-loop control structure like the last-stage frame 7, the flatness will definitely be controlled better, but a set of plate Shape measuring device 1 (plate shape measuring roller) plus the required investment cost of the corresponding system is close to one million dollars. If calculated according to five racks, an additional investment of four million dollars will be required, which will significantly increase the cost of equipment.

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