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Model self-adapting sheet shape prediction and control method

A model self-adaptive and predictive control technology, applied in the direction of self-adaptive control, contour control, general control system, etc., can solve the problems affecting the real-time performance of shape adjustment

Active Publication Date: 2010-06-30
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The conventional feedback control structure will inevitably affect the real-time performance of the strip shape adjustment due to the existence of the transfer time between the end frame and the flatness measuring mechanism.

Method used

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  • Model self-adapting sheet shape prediction and control method
  • Model self-adapting sheet shape prediction and control method

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Embodiment Construction

[0032] This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation methods and processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0033] This embodiment illustrates the present invention with respect to a six-roll UCM (Universal Crown Mill) mill. This type of mill has work roll bending, intermediate roll bending, intermediate roll shifting, reduction inclination, and partition cooling of the roll surface. Shape adjustment actuator. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] see image 3 , image 3 It is a block diagram of the shape predictive control structure. A model-adaptive flatness predictive control method, which decomposes the target flatness and the measured flatness according to a simple and practical flatness mode; the coefficient of the flatn...

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Abstract

The invention relates to a sheet shape control method for strip rolling. A model self-adapting sheet shape prediction and control method comprises the following steps: a sheet shape decomposition method and a sheet shape control model are given, and the input signals of the sheet shape control model include a rolling force and a crown of incoming material; then a sheet shape model which includes executing mechanism characteristics is obtained according to history sheet shape actual output data, the model is dynamically corrected according to real-time rolling parameters and corresponding actual sheet shape values, a correction model is used for accurately predicting the sheet shape and determining the optimal control quantity, and a feedback path, which removes transmission time-delay of strip steel between a frame and a measuring system, is established, thus carrying out regulation of a feedback controller in real time and ensuring rapid and dynamical sheet shape control. As the sheet shape control model is corrected in real time according to actual data, constantly changing actual conditions of the sheet shape model of a rolling mill are satisfied, thus predicting the sheet shape more accurately to increase the control accuracy of the sheet shape.

Description

technical field [0001] The invention relates to a strip shape control method for strip rolling, in particular to a model adaptive strip shape prediction control method. Background technique [0002] The rapid development of modern industry puts forward higher requirements for strip steel production. Plate thickness and plate shape are two important indicators to measure the quality of strip steel. At present, the thickness deviation in the rolling direction of strip steel has been effectively controlled, but the problem of strip steel plate shape has not been well solved. Manufacturers and users pay attention to it, and its quality directly affects the product yield and market competitiveness. Therefore, the research on flatness control methods is of great significance to the rise and fall of my country's iron and steel industry. [0003] Due to the development of flatness detection devices, as well as the development of automatic control and computer technology, flatness co...

Claims

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Application Information

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IPC IPC(8): B21B37/28G05B13/04
Inventor 顾廷权王建国陈培林李红梅唐成龙熊斐
Owner BAOSHAN IRON & STEEL CO LTD
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