Superspeed wire rod extension processing equipment control system

A processing equipment and control system technology, applied in the field of wire rod extension processing equipment control system, can solve problems such as low control accuracy and poor tracking control accuracy, and achieve the effects of improving error compensation, improving rapidity, and reducing estimation deviation

Active Publication Date: 2011-09-14
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of poor tracking control accuracy and low control precision in the ultra-high-speed operation of the existing wire rod extension processing equipment control system, the present invention provides an ultra-high-speed wire rod extension processing equipment with high tracking control accuracy and high control precision Control System

Method used

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  • Superspeed wire rod extension processing equipment control system
  • Superspeed wire rod extension processing equipment control system
  • Superspeed wire rod extension processing equipment control system

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example

[0042] Example: Take the 12-pass ultra-high-speed wire extension processing equipment as an example, select a 37KW motor, design the mechanical transmission ratio, match the die diameter, and calculate the compression ratio. When the finished product pass is 80m / s, the given speed voltage is 5v, the sampling period is 10ms, and the iteration period is 0.5s. Get position error e m , position error U em , series input U cm , taking the 8th pass as an example, the value is taken every 0.5s, the list is as follows:

[0043] time t(s)

[0044] time t(s)

[0045] time t(s)

[0046] It can be seen from the experiment that the position error e m , the speed control value U of the position error output em , are reduced to 0 within 10s, the speed control value U input in series cm Linear relationship with a given speed, U cm =1 / 2U n , thus verifying the accuracy, rapidity and feasibility of the iterative learning control system based on 2D system on ...

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Abstract

The invention discloses a superspeed wire rod extension processing equipment control system. The superspeed wire rod extension processing equipment control system comprises pass mechanisms, a rolling mechanism and a control device; the control device comprises a reference speed given module and a plurality of pass control units; in each pass control unit, the reference speed given module is connected with each parallel connection gain module; the parallel gain module is connected with a first positive input end of a speed control convergence node; the output of a position error controller is connected with a first negative input end of the speed control convergence node; the output end of the speed control convergence node is connected with an electrical transmission mechanism; the pass control unit also comprises an iteration controller; series connection gain initial value of a mth pass is set as shown in the formula in the specification by using an iteration learning law with reference to (1) and (2); and based on a 2D dynamic model, the speed compensation control variable iteration learning arithmetic control rate of moment t of a kth processing cycle of the m pass is shown inthe specification with reference to (3) and (4). The system has high tracking control accuracy.

Description

technical field [0001] The invention relates to electric control equipment for the production of metal products, in particular to a control system for wire extension processing equipment. Background technique [0002] There are mainly two methods of wire rod processing: rolling and drawing. Among them, rolling is used for occasions with large wire diameters, and the current maximum speed is about 120m / s. Drawing processing is used for occasions with small wire diameters, and the current maximum speed is about 30m / s. Improving processing speed can not only increase labor productivity, but also change the metallographic structure of metal materials and improve product quality. According to preliminary research, when the drawing processing speed is above 80m / s, the strength and toughness of the metal wire increase greatly, and the characteristics of the wire change. This type of wire is very suitable for some special occasions such as aviation and military affairs. Under ultr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C1/12
Inventor 南余荣王强
Owner ZHEJIANG UNIV OF TECH
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