Tertiary panel-shape closed-loop control method

A technology of closed-loop control and flatness control, which is applied in the direction of contour control, adaptive control, general control system, etc., and can solve the problems that are not suitable for the development of flatness control technology.

Inactive Publication Date: 2010-04-07
YANSHAN UNIV
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Problems solved by technology

With the improvement of user's requirements on the accuracy of the shape of the plate and the progress of rolling theory, equipment and technology, the means of control of the shape of the plate are diversified, such as tilting rolls, bending rolls, asymmetrical bending rolls, roll lateral movement, etc., so that the plate shape The control ability has been greatly improved, and the traditional primary, secondary and quaternary flatness-based modes are no longer suitable for the development of flatness control technology

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  • Tertiary panel-shape closed-loop control method
  • Tertiary panel-shape closed-loop control method
  • Tertiary panel-shape closed-loop control method

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Embodiment Construction

[0144] Embodiments of the invention are described below with the aid of the drawings:

[0145] A kind of plate shape closed-loop control method that contains three times plate shape proposed by the present invention, its calculation process is as follows figure 1 shown, including the following steps:

[0146] (a) Collect shape data (y i , σ i )(i=1, 2, ..., N z ), where N z is the number of measurement points, σ i is the coordinate y i shape deviation at

[0147] (b) Use the plate shape pattern recognition method containing three plate shapes to collect the plate shape data (y i , σ i )(i=1, 2, ..., N z ) for pattern recognition to identify the characteristic parameter e of the plate shape i (i=1,2,3,4);

[0148] (c) Establish a shape adjustment influence coefficient matrix to quickly calculate the network NN, and use the network NN to calculate the influence coefficient matrix C according to the current rolling state;

[0149] (d) from e calculated in step (b) i...

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Abstract

The invention relates to a tertiary panel-shape closed-loop control method, comprising the following steps: (a) panel-shape data (yi, Sigmai) are collected, wherein the i is equal to 1, 2,..., Nz, the Nz is the number of the measure points, and Sigmai is the panel-shape deviation at the yi of the coordinate; (b) the model of collected panel-shape data (yi, Sigmai) is identified with the tertiary panel-shape identification method to obtain the panel-shape characteristic parameter ei, wherein i is equal to 1, 2, 3 and 4; (c) a panel-shape adjustment influence coefficient matrix is established to rapidly calculate a network NN, and an influence coefficient matrix C is calculated with the network NN according to the current rolling state; and (d) the increment DeltaU of each panel-shape control parameter is calculated according to the panel-shape characteristic parameter ei identified in the step (b) and the influence coefficient matrix C calculated in the step (c) to control the panel-shape. The invention provides a simple, practical and displayed panel-shape control calculation method according to the panel-shape identification and the panel-shape control calculation through considering the tertiary panel-shape during the identification of the model of the panel-shape, and the panel-shape control calculation method is suitable for on-line control.

Description

technical field [0001] The invention relates to product quality control of a strip rolling mill, in particular to a flat-shaped closed-loop control method including three flat shapes. Background technique [0002] Shape closed-loop control is to calculate the control amount of each control means according to the shape signal detected online to carry out online shape control, and the requirement is fast and accurate calculation. The closed-loop control of plate shape is mainly composed of two links: the first link is plate shape pattern recognition, which maps the detected discrete value of tension (or residual stress) distribution to a few characteristic parameters; the second link is plate Calculate the shape control amount, and calculate the control amount according to the shape characteristic parameters of the shape pattern recognition. [0003] In the traditional shape pattern recognition method, the shape basic pattern curve forms mainly include ordinary polynomials an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/28G05B13/02
Inventor 刘宏民单修迎彭艳王东城孙亚波
Owner YANSHAN UNIV
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