Roller inclination output control method based on plate shape closed-loop regulating variable

Abstract

The invention discloses a roll inclination output control method based on a plate shape closed-loop regulating variable, and the method comprises the steps: building a continuous equation of a control model of a roll inclination closed-loop feedback PI controller and a discrete calculation expression of the continuous equation according to a setting principle of the PI controller; by means of the process characteristics of cold-rolled strip steel production and the control characteristics of a strip shape closed-loop feedback control system, a setting mode of the controlled quantity of roller inclination closed-loop feedback control when the strip steel specification changes is established, and the controlled quantity of the roller inclination closed-loop feedback control achieves the zero clearing function when the strip steel width or thickness changes. A control quantity maintaining function of roller inclination closed-loop feedback control during shearing is established by utilizing a welding seam four-rack passing signal and a wrapper belt signal.

Description

technical field [0001] The invention belongs to the technical field of shape control of cold-rolled strips, and relates to a method for controlling the tilting output of a roll based on a closed-loop adjustment amount of the shape. Background technique [0002] Roll inclination is an important shape control mechanism. In the L1 control system in the field of tandem cold rolling, a calculation method based on the error between the set value and the actual value has been developed for the roll inclination, which can effectively improve the control ability of the roll inclination. At present, a lot of research has been done on the control method of roll inclination, the acquisition of preset value and the closed-loop feedback control. However, there is little research on the data transmission method and transmission sequence of the actuator. If the data transmission sequence is not set properly, the execution position of the roll tilt actuator will change in a short time, whic...

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Problems solved by technology

[0003] At present, many scholars are correcting the rolling results. Whether it is a prediction model or a mechanism analysis model, they start from the perspective of the rolling results and reversely set the rolling process data that can achieve the results. However, for the roll tilt in Issues such as data fluctuation phenomena and data transmission strategies in the control process are still rarely studied

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