A Bending Roller Force Output Control Method Based on Plate Shape Closed-loop Adjustment

Abstract

The present invention provides a method for controlling the output of bending force based on the closed-loop adjustment of the plate shape. According to the setting principle of the PI controller, the PI control equations of the closed-loop feedback control of the work roll bending and the closed-loop feedback control of the intermediate roll bending and the Its discrete computation expression. Using the calculated data of the flatness preset system and the measured data of the flatness closed-loop feedback control system, change the setting method of the control amount of the bending roll closed-loop feedback control when the strip specification changes, so that the control amount of the bending roll closed-loop feedback control is in the strip steel. A clear function is implemented when the width or thickness changes. Using the signal of the welding seam passing through four frames and the signal of the auxiliary belt, the function of maintaining the control amount of the closed-loop feedback control of the bending roll during shearing is established.

Description

technical field [0001] The invention belongs to the technical field of shape control of cold-rolled strips, and relates to a bending force output control method based on a shape closed-loop adjustment amount. Background technique [0002] The adjustment mechanism for the shape control of the cold-rolled strip has three forms: intermediate roll bending, work roll bending and roll inclination. When the closed-loop feedback control of the bending roll is running, if the strip steel specification is changed, most systems will clear the closed-loop adjustment value of the bending roll, and then carry out the calculation of the next specification. The initial purpose of this setting method is that due to the change of specifications, the current closed-loop adjustment amount does not meet the production requirements of new specifications of strip steel, so it must be cleared first. However, the production survey found that although this method clears the closed-loop adjustment of...

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Problems solved by technology

[0004] At present, the research of many scholars is to correct the rolling results. Whether it is a prediction model or a mechanism analysis model, they all start from the perspective of rolling results, and reversely set the rolling process data that can achieve this result. However, for bending Few people have studied the data fluctuation phenomenon and data transmission strategy in the process of roller force control.

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