On-line control method of continuous casting blank temperature based on memory recognition mode

A technology for identifying modes and control methods, which is applied in the field of continuous casting of steel materials and other metal materials in the metallurgical process, can solve the problems of limited control effects, harsh temperature measurement environment, and many interference factors, so as to achieve easy application and make up for lag Sexuality and good control effect
CN101406940AInactive Publication Date: 2009-04-15CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2009-04-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for controlling the temperature of continuous casting blanks on line based on a memory recognition mode, wherein a computer control system aiming at the characteristics of the continuous process applies a feedback and feedforward complementary control model algorithm based on the memory recognition mode to perform real-time complementary control on a water distributing system in the whole secondary cooling region of a continuous casting machine, so that the surface temperature of a casting blank on a set temperature measurement control point is kept within a target temperature range to ensure the quality of the casting blank and the smooth operation of continuous casting production; and the method traces and analyzes disturbance factors to the temperature of the casting blank in the continuous casting process, considers the pulling speed and the history accumulative effect of water quantity changes, adopts an complementary mode of feedback control and feedforward control before and after a temperature measurement point, dually controls the hot state of the continuous casting blank in the whole secondary cooling region, solves the problem that the feedback control of the temperature is hysteretic so that the temperature feedback control algorithm can truly reflect the cooling process and the current hot state of the continuous casting blank, and introduces two control adjusting regions including an optimal temperature region and a fine adjustment temperature region to perform effective and reasonable control.
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Description

technical field

[0001] The invention relates to the field of continuous casting of iron and steel materials and other metal materials in the metallurgical process, and is suitable for various types of metallurgical continuous casting machines. Background technique

[0002] (1) Research status of on-line control technology for continuous casting slab temperature

[0003] As an important process of iron and steel production, the continuous casting process is a key link in the quality control of solidification and forming of iron and steel products. Uneven cooling or improper cooling intensity will cause quality defects of continuous casting slabs. Therefore, it is very necessary to study the secondary cooling of the continuous casting process and master the control of the cooling and solidification state of the continuous casting slab.

[0004] Continuous casting slab temperature is the most intuitive reflection of the strength of continuous casting secondary cooling, and is...

Claims

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