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Hysteresis control method for edge thinning of silicon steel based on model-free prediction method

A technology of edge thinning and control method, which is applied in the direction of contour control, etc., to achieve the effects of model-free prediction, small amount of calculation, good robustness, and good dynamic control quality

Active Publication Date: 2020-06-30
UNIV OF SCI & TECH LIAONING
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Problems solved by technology

However, it does not involve the introduction of hysteresis-resistant model-free predictive control in feedback control

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  • Hysteresis control method for edge thinning of silicon steel based on model-free prediction method
  • Hysteresis control method for edge thinning of silicon steel based on model-free prediction method
  • Hysteresis control method for edge thinning of silicon steel based on model-free prediction method

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Embodiment Construction

[0051] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0052] The silicon steel edge thinning hysteresis control method based on the model-free predictive estimation method of the present invention is characterized in that it comprises the following steps:

[0053] (1) Design of work roll shifting hydraulic servo control system

[0054] The work roll shifting utilizes tapered rollers to position on the edge of the strip, and the work roll shifting hydraulic servo control system is designed. The work roll shifting hydraulic servo control system is shown in the figure figure 1 As shown; in the work roll shifting hydraulic servo control system, the hydraulic cylinder is a double-piston rod hydraulic cylinder, and the A and B control oil ports of the servo valve are respectively connected with the two oil chambers of the roll shifting cylinder; the position setting value occurs when the ra...

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Abstract

The invention belongs to the technical field of cold-rolled silicon steel rolling process control, and in particular relates to a silicon steel edge thinning hysteresis control method based on a model-free prediction method, which is characterized in that it includes the following steps: (1) working roll shifting hydraulic servo Design of control system; (2) Design of closed-loop control system for edge descent; (3) Model-free adaptive algorithm; (4) Model-free edge thinning hysteresis predictive control. The present invention effectively controls the edge thinning hysteresis of silicon steel through feedback control, feedforward control, and introducing anti-lag model-free predictive control in the feedback control; the work roll shifting utilizes tapered rolls to perform positioning on the edge of the strip , fully possesses the control function for edge thinning of non-oriented silicon steel; edge thinning hysteresis feedback control and model-free prediction algorithm have good dynamic control quality for the time lag problem in the edge thinning closed-loop control system, no object The model can make the system output quickly and stably reach the set value in a relatively short period of time.

Description

technical field [0001] The invention belongs to the technical field of cold-rolled silicon steel rolling process control, and in particular relates to a silicon steel edge thinning hysteresis control method based on a model-free predictive estimation method. Background technique [0002] Non-oriented silicon steel is a high value-added product in cold-rolled strips. It has good electromagnetic properties and is widely used in the fields of electric power, electromechanical and military industries. Most of the motors and other products made of silicon steel need to be stacked with multiple sheets. Therefore, reasonable control of the edge thinning of silicon steel can not only greatly increase its yield, but also improve the performance and quality of the product. In order to meet the national requirements for energy saving and consumption reduction, domestic home appliance companies require that the same-plate difference accuracy of silicon steel products produced by iron an...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/40
CPCB21B37/40
Inventor 刘洪宇刘俊清
Owner UNIV OF SCI & TECH LIAONING
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