Hot rolling deformation resistance prediction method based on generalized additive model

Abstract

The invention discloses a hot rolling band steel deformation resistance prediction method based on a generalized additive model. The hot rolling band steel deformation resistance prediction method comprises the following steps of 1, variable pre-analysis: determining the form of a connection function and a model; determining a model attributive variable and an independent variable; 2, model setting: determining the basic form of the model; selecting a connection function according to the distribution of the attributive variable; determining the function form of each independent variable; 3, model estimation: estimating the connection function and the smooth function to obtain different models; selecting an optimum module according to the GCV (gross calorific value); 4, model result and evaluation: obtaining the estimation value of the model parameter part and the non-parameter part; performing evaluation and analysis on the fitting result of the smooth function; 5, model correction: combining the statistics analysis method and rolling theory, verifying the model result at different angles; performing model correction when being required. The method has the advantages that the deformation resistance of the hot rolling band steel under different rolling work conditions can be predicted; the basis is provided for the high-precision rolling force calculation and thickness control in the band steel rolling process.

Description

technical field [0001] The invention relates to the field of production process control of hot-rolled strip steel, in particular to a method for predicting deformation resistance of hot-rolled strip steel based on a generalized additive model. Background technique [0002] Deformation resistance is an important factor affecting the rolling force of the hot-rolled strip rolling process, and it plays a key role in the safe operation of equipment and the rational formulation of processing technology. The deformation resistance model is the core of the rolling force model, and its prediction accuracy directly affects the accuracy of the mathematical model of the entire rolling process and the thickness hit rate of the final finished strip. For the research on the deformation resistance model, scholars from various countries mainly use experimental research, and there are few researches on the actual measurement data of the production site. In fact, the secondary data on site co...

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Problems solved by technology

[0004] In order to solve the above-mentioned technical problems existing in the traditional deformation resistance model, the present invention provides a quantitative calculation method that can determine the cause of the change in the deformation resistance of hot-rolled strip steel, and can understand the degree of influence of various parameters on the deformation resistance of hot-rolled strip steel. The accurate prediction of deformation resistance can provide important support for the high-precision setting calculation of hot-rolled strip rolling force model and the improvement of product thickness index. The prediction method of hot-rolled strip deformation resistance based on generalized additive model

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