Process for controlling temperature of strip steel

A technology for controlling strips and strips, applied in heat treatment process control, manufacturing tools, coatings, etc., can solve the problems of low control accuracy and slow response speed, and achieve the effects of high control accuracy, fast response speed and good effect.

Active Publication Date: 2005-12-07
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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Problems solved by technology

[0002] Strip temperature control is one of the core control technologies of the entire production line, which plays a very important role in improving product quality. Generally, the mathematical model of the heating furnace is used to control the temperature of the strip. At present, most of the existing mathematical models of the heating furnace are It depends on the specific production process manufacturer. Different production process manufacturers have different corresponding annealing furnace mathematical model mechanisms, and the response speed is slow and the control accuracy is not high.

Method used

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  • Process for controlling temperature of strip steel
  • Process for controlling temperature of strip steel
  • Process for controlling temperature of strip steel

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Embodiment Construction

[0017] Such as figure 1 Shown: the method for controlling strip steel temperature of the present invention comprises the steps:

[0018] 1. According to the sequence of plate passing, the basic data of the steel plate, the speed setting value of the central section, the actual temperature of the strip steel, the target temperature of the strip steel, and the self-learning parameters of the process digital model, using the principle of generalized predictive control (GPC), according to The zone temperature dynamic model predicts the zone temperature at a certain time in the future;

[0019] 2. Make the difference between the target strip temperature and the predicted strip temperature reach the minimum value, and calculate the required gas flow deviation;

[0020] 3. Then calculate the gas flow set value according to the actual gas flow combined with the gas flow deviation;

[0021] 4. Send the gas flow setting value to the instrument control equipment;

[0022] 5. Carry out...

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Abstract

The invention provides a process for controlling temperature of strip steel comprising the steps of, (1) forecasting the strip temperature of a certain future time based on strip temperature dynamic model, (2) calculating the needed gas flow variance so as to minimize the difference between the temperature of the destination strip steel and the forecasted strip temperature, (3) calculating gas flow configuration value according to the real gas flow and the gas flow deviation(4) sending the gas flow configuration value to the instrument control apparatus, (5) carrying out static model and dynamic model self-learning according to the real strip temperature, and calculating the gas flow configuration value again.

Description

technical field [0001] The invention relates to a method for controlling the temperature of strip steel, which is used for the temperature control of strip steel in continuous production lines such as continuous annealing units and hot-dip galvanizing units in cold rolling mills. Background technique [0002] Strip temperature control is one of the core control technologies of the entire production line, which plays a very important role in improving product quality. Generally, the mathematical model of the heating furnace is used to control the temperature of the strip. At present, most of the existing mathematical models of the heating furnace are It depends on the specific production process manufacturer. Different production process manufacturers have different corresponding annealing furnace mathematical model mechanisms, and the response speed is slow and the control accuracy is not high. Contents of the invention [0003] The technical problem to be solved by the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D11/00
Inventor 金武明
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
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