Decoupling method and device for position balance and constant tension control of vertical looper

Abstract

The invention provides a decoupling method and device for position balance and constant tension control of a vertical looper. By collecting the real-time position of each sub-loop of a multi-tower vertical looper, the amount used for leveling the loop is calculated. It includes auxiliary roller compensation speed with speed ramp, which can smoothly adjust the amount of each looper and is independent of the speed setting and torque limit setting of the winch drive motor of each sub-loop, the latter only Used to establish the tension of the sub-looper and keep it constant, so the present invention realizes smooth adjustment of position balance and complete decoupling from tension control.

Description

technical field [0001] The invention belongs to the field of metallurgical automation, and more specifically relates to a control method and a control device for a looper in a cold rolling process. Background technique [0002] In modern industrial production, some more complex equipment or devices are constantly appearing. These equipment or devices often require more parameters to be controlled. Therefore, it is necessary to set up multiple control loops to control this kind of equipment. Due to the increase of control loops, there will often be a coupling effect between them, that is, the input signal of each control loop in the system will affect the output of all loops, and the output of each loop will be affected by all input signals. role. It is almost impossible for one input to control only one output, which constitutes a "coupled" system. Due to the coupling relationship, the system is often difficult to control and the performance is degraded. [0003] In the f...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the control of the looper is nothing more than the control of the position and tension of the looper. However, the traditional position balance control technology of the looper is realized by controlling the speed or torque adjustment of the looper winch motor, and its adjustment Most of the controllers use proportional integral regulators, so that in the process of looper leveling, the tension of the strip steel in the looper is affected, that is, there is a coupling effect

Especially in the initial stage of adjustment, the impact is relatively large, and the above-mentioned technical solutions or methods will reduce the looper tension control performance

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