On-line model of motor starting time of bar finishing line separating plate and braking plate

Abstract

The invention relates to an on-line model of motor starting time of a bar finishing line separating plate and a braking plate, which has the following scheme: firstly, acquiring the latest 2k time data of the separating plate and the braking plate falling from a high position to a low position, and acquiring a time predicted value of the separating plate and the braking plate falling from the high position to the low position for the next time by adopting a weighted mean value filtering algorithm; on the basis of the moving process of multiple-length steel (1) on the separating plate and the braking plate, according to the effective length and the multiple length of a cooling bed (2) and the requirement for flushing of the multiple-length steel (1), establishing a distance model between a steel splitting point (3) and the cooling bed (2); then, establishing a motor starting time model of the separating plate and the braking plate after shearing of a flying shear (4); after shearing of the flying shear (4), respectively delaying T separating time and T braking time, and starting the motors of the separating plate and the braking plate; and acquiring the acting time of the separating plate and the braking plate, and repeating the computation method. The model established in the invention is relatively accurate, can continuously approach the requirements of working conditions, and can be used for computer control to improve the degree of automation of the system of the bar cooling bed (2).

Description

technical field [0001] The invention belongs to the technical field of bar continuous rolling control. In particular, it relates to an online model of the start-up time of the separating plate and brake plate motors of a bar finishing line. Background technique [0002] Cooling bed steel feeding system is an important link in the bar production process. The equipment used includes separation plate, brake plate, cooling bed, etc. Its function is to receive the double-foot steel cut by flying shears, and then put the double-foot steel in order Put it on the cooling bed for cooling, and finally send it to the cold shears to cut into the required finished bars. Whether the double-foot steel can be smoothly placed on the cooling bed and the degree of cooperation between the double-foot steel and the separation plate, brake plate, cooling bed and other equipment will directly affect the production efficiency and yield of the bar. [0003] "An automatic control device for finishi...

AI Technical Summary

Problems solved by technology

[0003] "An automatic control device for finishing line cooling bed (ZL200620096117.5)" realizes the measurement of the moving time of the separation plate and brake plate from high position to low position, on-line measurement of the actual length of double-scale steel, and the separation plate and brake plate motor The empirical formula calculation and automatic control of the start-up time, this device can realize the basic automation of the cooling bed system of the bar finishing line, and reduce the labor intensity to a certain extent, but this device cannot realize the optimal operation state of the cooling bed steel delivery system , the main reasons are as follows: (1) The calculation of the start-up time of the separation plate and brake plate motor is an empirical formula; (2) the measured movement time of the separation plate and brake plate is directly used in the calculation of start-up time, but The measured time is the time when the movement has been completed, which is different from the movement time of the next double ruler to be controlled

Since the separation plate, brake plate and double-length steel do not achieve the best cooperation in the finishing line movement process, the improvement of the rolling rhythm is limited, and cold bed punching accidents are prone to occur

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