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Distributed prediction control system of band steel hot continuous rolling process

A predictive control and control system technology, applied in rolling mill control devices, metal rolling, metal rolling, etc., can solve problems such as inability to comprehensively consider coupling, inability to optimize closed-loop control performance, and inability to suppress the influence of global disturbances, and achieve global performance. The effect of optimization and reduction of computational burden

Inactive Publication Date: 2015-04-15
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This control method operates independently, and cannot comprehensively consider the coupling between various parts of the system, cannot suppress the impact of global disturbances on the entire system, and cannot achieve closed-loop control performance optimization from a global perspective

Method used

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  • Distributed prediction control system of band steel hot continuous rolling process
  • Distributed prediction control system of band steel hot continuous rolling process
  • Distributed prediction control system of band steel hot continuous rolling process

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Experimental program
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Embodiment Construction

[0027] The symbols appearing in the drawings and some formulas and the physical quantities represented by the symbols are shown in Table 1:

[0028] Table 1

[0029]

[0030]

[0031] Such as figure 1 As shown, the hot strip rolling control system includes multiple rolling mills and multiple loopers. In this embodiment, the hot strip rolling control system includes 7 sets of rolling mills and 6 sets of loopers. In addition, the hot strip rolling control system also includes a tension sensor for measuring the tension of the looper; hydraulic equipment for driving the looper; an angle sensor for measuring the angle of the looper; ASR (Automatic Speed ​​Regulator, automatic speed Regulator), used to adjust the speed of the looper; ATR (Automatic Torque Regulator, automatic torque regulator); controller, used to coordinate and control the entire hot strip rolling control system through the network (field bus).

[0032] figure 2 It is a schematic plan view of the deforma...

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Abstract

The invention discloses a distributed prediction control method and system of a band steel hot continuous rolling process. The distributed prediction control system comprises a plurality of subsystems and a plurality of local prediction controllers for the subsystems, wherein the quantities of the subsystems and the local prediction controllers are equal, the subsystems are mutually coupled, system state variable information is interacted among the local prediction controllers, and one subsystem is correspondingly connected with one local prediction controller. According to the distributed prediction control method and system, the coupling among parts of the band steel hot continuous rolling control system, especially between an AGC (Automatic Gain Control) device and a loop device, is fully considered, and the overall situation performance optimization of closed loop control is realized.

Description

[0001] This application is a divisional application of "Application No. 201110223093.0, application date: August 4, 2011, name: distributed predictive control method and system for strip hot rolling process". technical field [0002] The invention relates to a distributed predictive control method and a distributed predictive control system thereof, in particular to a distributed predictive control method and a distributed predictive control system of a strip hot continuous rolling process. Background technique [0003] The hot continuous rolling becomes a whole due to the connection of the strip steel. There is a gap between the thickness of the strip steel controlled by the AGC (Automatic Gauge Control) device and the second flow and tension controlled by the looper, as well as between each rack. the coupling phenomenon. In less demanding conventional control, this coupling phenomenon is neglected. With the change of rolling mill pressing system from electric to hydraulic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/20
Inventor 王景成仲兆准
Owner SHANGHAI JIAOTONG UNIV