Plate shape closed-loop control method based on influencing self learning of matrix

Abstract

The invention relates to a plate shape closed-loop control method of cold-rolled strip steel based on influencing self learning of a matrix. An influence matrix empirical value table with different plate belt materials and different passes is established by determining two key influence factors; and in the process of the plate shape closed-loop control, actually-measured plate shape data is utilized to improve the quality of the influence matrix empirical value table continuously by a self-learning mode, so as to lead the influence matrix empirical value table to be closer to the actual regulating efficiency of a plate shape regulating mechanism. As the self learning process is carried out under the condition of the practical coupling action of influence factors of the regulating performances of all regulating mechanism, the method is more comprehensive than the factors considered by the intelligent method in a sense. In addition, in the process of closed loop control, influences on calculation of the matrix and self learning of the matrix are realized by adopting a simple mathematical algorithm, the calculating speed is high, and the real-time performance is good. Therefore, the method has the advantages that the reliability is high, the adaptability is strong, online application is suitable, the implementation is convenient and the like.

Description

technical field [0001] The invention relates to the product quality control technology in the strip cold rolling process, in particular to a strip shape closed-loop control method based on influence matrix self-learning. Background technique [0002] With the development of science and technology, the demand for strip steel in various industries is increasing, and the quality requirements of users for strip steel are also getting higher and higher, especially for cold-rolled thin plates such as home appliance steel plates, automobile steel plates, and tin-plated steel plates. shape of the plate. If the shape of the cold-rolled strip is poor, it will seriously affect the quality and life of its subsequent deep-processing products. To make cold-rolled strip products have good shape, it is necessary to equip the cold strip mill with a perfect flatness closed-loop control system, and the flatness closed-loop control model is the core part of the flatness closed-loop control sys...

AI Technical Summary

Problems solved by technology

[0051] At present, according to the existing literature, the online solution method of the influence matrix mainly adopts the intelligent method [3，4，5] , but the inherent weak generalization performance of the intelligent method makes it difficult to achieve stable work in the actual rolling process. In addition, the implementation of the intelligent method is also difficult

These factors make it difficult for the shape control method based on the influence matrix to be applied in practice

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