Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Straight-pull cold-rolling mill tension control method based on speed feedforward

A technology of tension control and feedforward control, applied in the direction of tension/pressure control, etc., can solve the problems that cannot be satisfied at the same time

Active Publication Date: 2012-07-04
NORTHEASTERN UNIV
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the existing tension control method cannot simultaneously meet the requirements of the tension hydraulic cylinder and the speed matching of the rolling mill and the tension control precision of the straight-pull reversible cold rolling experimental rolling mill, the present invention provides a tension hydraulic cylinder and Tension control method for straight-pull cold rolling mill based on speed feed-forward based on precise matching of rolling mill speed and high tension control accuracy

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
  • Straight-pull cold-rolling mill tension control method based on speed feedforward
  • Straight-pull cold-rolling mill tension control method based on speed feedforward
  • Straight-pull cold-rolling mill tension control method based on speed feedforward

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0145] A 450mm straight-pull reversible cold-rolling experimental rolling mill in a technical center is adopted. The relevant parameters of the system are as follows:

[0146] Tension hydraulic cylinder inner diameter: 125mm, rod diameter: 90mm, maximum stroke: 2100mm, maximum tension: 100kN, maximum speed: 0.4m / s, tension hydraulic cylinder built-in displacement sensor model: RHM2150MD701S1G2100, high pressure oil source pressure: 23.5MPa, high pressure Model of oil pressure sensor: HDA3844-A-250-000; MOOG servo valve is used for flow control, model: D661-4444C G60JOAA6VSX2HA. The tension control system adopts Siemens S7400PLC, the CPU unit used is CPU416-2DP+FM458-1DP, and the tension controller runs in FM458-1DP.

[0147] Raw material specifications: thickness 3.05mm, width 310mm, length 600mm, variety SPCC,

[0148] Target thickness: 0.5mm,

[0149] Rolling passes: 7,

[0150] Maximum rolling speed: 0.25m / s.

[0151] Taking the seventh rolling pass as an example, the e...

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 discloses a straight-pull cold-rolling mill tension control method based on speed feedforward and belongs to the technical field of cold-rolling tension control. The straight-pull cold-rolling mill tension control method can be used for realizing the purpose of precisely matching the speeds of a tension hydraulic cylinder and a rolling mill and is high in tension control precision. The straight-pull cold-rolling mill tension control method comprises the following steps: 1. determining a linear velocity set value of a rolled piece on the input of a rolling machine and a linear velocity set value on an output; 2. determining the servo valve control amount of the speed feedforward control of an inlet tension hydraulic cylinder and an outlet tension hydraulic cylinder; 3. determining the servo valve control amount of the tension feedback control of the inlet tension hydraulic cylinder and the outlet tension hydraulic cylinder; 4. determining the final servo valve control amounts of the inlet tension hydraulic cylinder and the outlet tension hydraulic cylinder; and 5. sending the determined final servo valve control amounts of the inlet tension hydraulic cylinder and the outlet tension hydraulic cylinder into a control system, and regulating the servo valves of the inlet tension hydraulic cylinder and the outlet tension hydraulic cylinder by virtue of the control system.

Description

technical field [0001] The invention belongs to the technical field of cold rolling tension control, in particular to a tension control method of a straight-pull cold rolling mill based on speed feedforward. Background technique [0002] The straight-pull reversible cold rolling experimental mill is a new type of cold rolling experimental mill, which is mainly used for cold rolling experiments on a single short-rolled piece; compared with the traditional coil-type reversing cold rolling mill, it can greatly save strip steel Consumption of experimental raw materials. The tension control of the straight-pull reversible cold rolling experimental rolling mill is realized by the tension hydraulic cylinder. The specific method is to clamp the two ends of the rolled piece through the chuck on both sides of the rolling mill, and set the tension hydraulic cylinder on both sides, and use the servo valve to control the hydraulic oil. flow, thereby driving the tension hydraulic cylinde...

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
IPC IPC(8): B21B37/48
Inventor 李建平孙涛牛文勇王贵桥花福安邹杰
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com