Hot continuous rolling loop system control method based on dynamic matrix controller

A dynamic matrix and control method technology, applied in rolling mill control device, tension/pressure control, metal rolling, etc., can solve the problems of tension fluctuation stability, product quality, interference, etc., to achieve stable operation and improve dimensional accuracy. Effect

Inactive Publication Date: 2020-01-03
HUAQIAO UNIVERSITY
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  • Application Information

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Problems solved by technology

Due to the limitation of the response time of the tension control system, the interference problem in production cannot be solved, and the fluctuation of tension will lead to the stability of operation and the quality of products.

Method used

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  • Hot continuous rolling loop system control method based on dynamic matrix controller
  • Hot continuous rolling loop system control method based on dynamic matrix controller
  • Hot continuous rolling loop system control method based on dynamic matrix controller

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Embodiment Construction

[0030] The present invention will be further described below through specific embodiments.

[0031] A control method for the hot rolling looper system based on a dynamic matrix controller. The optimal speed control amount and torque increment based on the dynamic matrix algorithm can be solved in a coordinated manner to control the looper angle and strip tension, which is highly stable. The strip hot rolling processing provides a guarantee. Include the following steps:

[0032] 1) The main motor and the looper motor are approximated as the first-order inertia link, and the dual-input and double-output linearization model of the looper system is established according to the dynamic model of the looper and the strip steel tension.

[0033] According to the structure of the looper system of hot continuous rolling, through the analysis of the dynamic coupling process of the looper system, taking ΔM, Δv as the system input, and Δθ, Δσ as the system output, draw the dynamic system ...

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Abstract

The invention relates to a hot continuous rolling loop system control method based on a dynamic matrix controller, which realizes cooperative optimal control on a hot continuous rolling loop angle andtension dual-input dual-output coupling system. The method comprises the following steps that a dual-input double-output coupling transfer function model of a loop system is established through analysis of the dynamic coupling process of the loop system; the dual-input dual-output coupling transfer function model is decomposed into two dual-input single-output systems, and the two dual-input single-output systems are discretized; and a controller of the loop system is designed by adopting a dynamic matrix control algorithm (DMC), and by selecting a proper quadratic performance index function,the cooperative optimal control on the loop height and the strip steel tension is achieved. According to the technical scheme, the cooperative optimal control of angle and tension of any one hot continuous rolling loop system can be achieved, and stable operation of the loop system is realized, so that the dimensional precision of a strip steel is improved.

Description

technical field [0001] The invention relates to the technical field of continuous hot rolling processing of iron and steel plates, in particular to a control method for a looper system of hot continuous rolling based on a dynamic matrix controller. Background technique [0002] The looper control system of hot continuous rolling includes two aspects: looper height control and strip tension control. The traditional looper control method adopts the method of independent control of looper height closed-loop and strip tension closed-loop, that is, the looper height is controlled by adjusting the speed of the main drive motor of the upstream rack, and the belt between racks is controlled by adjusting the output torque of the looper motor. Steel tension is constant. In the actual rolling process, the height of the looper and the tension of the strip affect each other. The tension changes with the fluctuation of the height of the looper, and the height of the looper also changes w...

Claims

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Application Information

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IPC IPC(8): B21B37/00B21B37/50B21B41/00G06F17/16
CPCB21B37/00B21B37/50B21B41/00G06F17/16
Inventor 尹方辰宋宁宁余刘齐王柴志
Owner HUAQIAO UNIVERSITY
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