Unlock instant, AI-driven research and patent intelligence for your innovation.

Second Flow Thickness Control Method and System for Cold Rolling Mill Based on Adaptive Controller

A technology of adaptive controller and thickness control, applied in rolling mill control devices, manufacturing tools, metal rolling, etc., can solve problems such as inappropriateness and great influence of PI controller control performance, and achieve the effect of good control performance

Active Publication Date: 2019-03-29
WISDRI ENG & RES INC LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the second flow AGC method practical in industry generally calculates the adjustment amount of the roll gap through the proportional integral (PI) controller. As we all know, the selection of proportional integral parameters has a great influence on the control performance of the PI controller, and the working conditions in the rolling process constantly changing, it is inappropriate to use a fixed proportional-integral parameter

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Second Flow Thickness Control Method and System for Cold Rolling Mill Based on Adaptive Controller
  • Second Flow Thickness Control Method and System for Cold Rolling Mill Based on Adaptive Controller
  • Second Flow Thickness Control Method and System for Cold Rolling Mill Based on Adaptive Controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention will be further described below in conjunction with specific examples and accompanying drawings.

[0031] figure 1 It is a schematic diagram of the thickness control system and its main detection instruments of a single-stand reversing rolling mill. The current rolling direction is from left to right, and the next pass will be from right to left, and then reversed repeatedly. Under the current pass, the strip steel 7 starts from the entrance coiler 1, passes through the entrance turning roll 2 and is then rolled in a six-high rolling mill 8, the hydraulic cylinder 5 provides rolling force, then passes through the exit turning roll 13, and finally Coiled on the outlet coiler 14. The unit is equipped with an entrance tension gauge 3 and an exit tension gauge 12 to measure the tension at the entrance and exit of the rolling mill. It is also equipped with an entrance thickness gauge 4 and an exit thickness gauge 11 to measure the thickness of the stri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a cold-rolling mill second flow thickness control method based on an adaptive controller. The method comprises the following steps: pre-calculating a thickness value of a stripsteel outlet according to a second flow equation; measuring an actual value of the thickness of the strip steel outlet by using an outlet thickness measuring instrument so as to correct the pre-calculated strip steel outlet thickness value; adaptively regulating the proportion and integral parameters according to a calculation model; and subsequently calculating second flow thickness control quantity by using a parameter-optimized PI controller. The method provided by the invention realizes optimized second flow thickness control and maintains a good control performance of the second flow AGCin an overall rolling process.

Description

technical field [0001] The invention relates to the technical field of steel rolling control, in particular to a method and system for controlling the second flow thickness of a cold rolling mill based on an adaptive controller. Background technique [0002] The thickness control system of a single-stand reversing cold rolling mill generally includes three automatic gauge control methods: feedforward, second flow, and monitoring. Among them, the second flow AGC is the main method of feedback control. The second flow AGC is based on the law of second flow identity in the deformation zone, which means that the mass flow of the metal before and after the frame is constant, and because the width of the strip steel before and after the frame is basically the same, then The speed and thickness of the strip before and after the frame maintain a strict proportional relationship, namely: [0003] V en × h en =V ex × h ex [0004] where V en -Strip inlet speed; V ex - strip ex...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/18B21B38/04
CPCB21B37/165B21B37/18
Inventor 陈跃华
Owner WISDRI ENG & RES INC LTD