Method for determining effect of strip shape execution mechanism of metal strips

Abstract

The invention relates to a method for determining effect of a strip shape execution mechanism of metal strips. The method comprises the steps of firstly acquiring field actual measurement data to obtain a strip shape measured value as well as an output value of the strip shape execution mechanism; processing the original data and due to noise, characteristics of the execution mechanism and the like, conducting filtering and normalization on the data so as to obtain effective field data; conducting polynomial regression on the effect vector of the execution mechanism and determining polynomial order; establishing a compute matrix according to a linearly independent vector in the effect vector; conducting multiple regression analysis according to the compute matrix so as to calculate regression parameters; and finally, calculating the effect vector of the execution mechanism according to the regression parameters. According to the method, the effect vectors of different execution mechanisms are calculated simultaneously at a time by using the field actual measurement data and the calculating method is simple and convenient.

Description

technical field [0001] The invention relates to a method for determining the effect of a plate shape actuator of a metal strip, and belongs to the technical field of cold rolling mill control. Background technique [0002] In the metal processing industry, the cold rolling mill, as the key processing equipment, plays an important role in the entire rolling process. By realizing the shape control of the cold rolling mill, the shape performance index of the rolled product can be improved, the shape deviation of the strip can be within the allowable range, the rolling speed can be increased, and the occurrence of failures such as strip breakage can be reduced. [0003] During the realization of flatness control, the flatness controller runs the flatness control algorithm, and the control value is output to the actuators such as rolling mill pressing, bending roll, intermediate roll twitching and cooling system, and then the actuators generate actions. For the rolling mill body ...

AI Technical Summary

Problems solved by technology

Although this type of method is relatively intuitive, it has the disadvantages of difficult modeling, too many assumptions, cumbersome analysis, and complex calculations.

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