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Control method for self-adaption compensation of elongation of planisher

A technology of self-adaptive compensation and control method, applied in tension/pressure control, rolling force/roll gap control, metal rolling, etc., which can solve the problems of compensation control in acceleration and deceleration stage, poor elongation stability, etc.

Inactive Publication Date: 2014-05-21
WISDRI WUHAN AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the tempering unit control system directly converts the elongation rate deviation signal into the rolling force or S-roll speed deviation signal, and performs feedback control on the elongation rate, but does not make reasonable compensation control for the acceleration and deceleration stages, and the stability of the elongation rate control is poor.

Method used

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  • Control method for self-adaption compensation of elongation of planisher
  • Control method for self-adaption compensation of elongation of planisher
  • Control method for self-adaption compensation of elongation of planisher

Examples

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Effect test

Embodiment 1

[0034] Embodiment 1: Self-adaptive compensation control method for elongation rate of temper mill

[0035] Specifically, a method comprising the following steps is adopted:

[0036] 1. Definition of flat elongation:

[0037] The basic meaning of leveling elongation is different from conventional rolling. Leveling is essentially a small deformation rolling, which is a very important production process in the cold rolling process. Elongation is one of the most basic process parameters in skin-passing. The reduction in the skin-passing pass is very small, and the strip thickness deviation between the exit side and the entrance side of the skin-passing machine can hardly be measured with a thickness gauge. Therefore, the measuring tape The method of steel elongation as an equivalent value for measuring its thickness change.

[0038] Elongation is defined as the ratio of the difference between the strip thickness before leveling and the strip thickness after leveling to the strip...

Embodiment 2

[0072] Example 2: Application of adaptive compensation control method for elongation rate of temper mill

[0073] When the leveling unit is running at a low speed with acceleration and deceleration, both the installation accuracy of the equipment and the response characteristics of the laser speedometer will cause fluctuations in the elongation control accuracy, such as figure 2 As shown, we increase the elongation rate adaptive compensation control link according to the method described in Embodiment 1, and the specific steps are as follows:

[0074] (1) The self-adaptive compensation program for the elongation of the temper mill receives the set value of the rolling force FR * , Tension setting value before and after the tempering machine and Elongation setting value ε * ;

[0075] (2) Measure the rolling force FR through the pressure head of the temper mill act , Tension meter measured T Nact and T Xact , rotary encoder and laser velocimeter to measure the strip e...

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Abstract

The invention relates to a control method for self-adaption compensation of elongation of a planisher. The control method specifically comprises the steps of collecting an actual rolling force value and a tensile force value during acceleration and deceleration of a planisher set, calculating the strip steel elongation compensation factor K, calculating additional rolling force and additional tensile force by utilizing the strip steel elongation compensation factor K, applying the obtained additional values to the step of controlling the elongation of the planisher, and realizing control on the self-adaption compensation of the elongation of the planisher. The control method solves the problem of fluctuation of control on the elongation in the acceleration or deceleration stage of the planisher set currently, thereby being capable of eliminating the influence of acceleration and deceleration on the disturbance of control on the elongation, and also improving the elongation control precision.

Description

technical field [0001] The invention relates to the field of strip steel tempering machines, in particular to a self-adaptive compensation control method for elongation of the tempering machine. Background technique [0002] In the strip skinning unit, stable elongation control is very important. In order to ensure stable operation in the low-speed stage of skinning, it is necessary to stably control the strip elongation. At present, the tempering unit control system directly converts the elongation rate deviation signal into the rolling force or S-roll speed deviation signal, and performs feedback control on the elongation rate, but does not make reasonable compensation control for the acceleration and deceleration stages, and the stability of the elongation rate control is poor. . Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an adaptive compensation control method for the elongation rate of the tempering ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B15/00B21B37/58B21B37/48
Inventor 侯泽跃王胜勇卢家斌李传涛李四川李海东
Owner WISDRI WUHAN AUTOMATION
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