Control system for transverse integrative optimization of shape of cold rolled steel strip

Abstract

The invention discloses a control system for transverse integrative optimization of the shape of a cold rolled steel strip, which comprises a contact-type shape gauge mounted at an outlet of a rolling mill to measure and obtain output shape parameters of the rolling mill; a calculating and controlling module is connected with the contact-type shape gauge to receive the output shape parameters of the rolling mill obtained by the contact-type shape gauge and calculate an optimal regulating variable of a regulating mechanism according to the output shape parameters and target shape parameters; and the regulating mechanism is connected with the calculating and controlling module to adjust the rolling mill according to the optimal regulating variable calculated by a calculating and controlling module. The control system for transverse integrative optimization of the shape of the cold rolled steel strip effectively solves the technical problems of large deviation of partial shape and high defective rate caused by use of the traditional shape control method, and the shape control quality of the cold rolled steel strip can be enhanced remarkably.

Description

technical field [0001] The invention relates to the field of cold-rolled strip steel, in particular to a cold-rolled strip shape transverse overall optimization control system. Background technique [0002] With the rapid development of domestic and foreign strip product manufacturing industries, downstream users have increasingly high requirements for the shape quality of cold-rolled strip products, especially for industries such as high-end automobiles and high-end IT product manufacturing. Therefore, the quality of cold-rolled strip shape has become one of the main technical indicators for evaluating strip products. [0003] During the rolling process of cold-rolled strip steel, the strip steel will undergo obvious longitudinal elongation and transverse flow. When the transverse flow of strip steel is large, the longitudinal extension of each strip element in the transverse direction of strip steel will be inconsistent, and there will be elongation difference between adj...

AI Technical Summary

Problems solved by technology

And utilize above-mentioned plate shape statistics method, when plate shape data meets product plate shape requirement on statistics (such as ), it cannot guarantee that the shape of all strips meets the shape requirements of the product (in this case, δ i <10I are all established)

[0007] In the existing cold-rolled strip production process, technicians usually use the method of multivariable optimization control model to calculate the online adjustment amount of each plate shape control mechanism. The control method is: through the adjustment of the adjustment mechanism, the actual The square sum of the deviation between the shape and the target shape is the minimum value. Here, the shape deviation of each bar is treated equally, but the part with a large shape deviation has not been effectively dealt with, so the exit of the rolling mill is generated. The partial deviation of the plate shape in the plate shape is too large, and the product defective rate is high

Images