tension ntrol method for a rolling mill
2019-09-02T10:09:55+00:00
Looper and tension control in hot rolling mills: A survey
Jul 1, 2007 Tension and looper control in finishing mills: ASR—Automatic Speed Regulator, ACR—Automatic Current Regulator A looper installed at interstand positions In the control of the tension of a workpiece which is rolled by a tandem rolling mill, a tension control method for a rolling mill wherein the tension of a workpiece is USA Tension control method for a rolling millJun 16, 2004 The simplest scheme for modeling the rolling process considers the reduction of a strip thickness by passing the hot strip Advanced Control Techniques for Rolling Mills
Synthesis of Tension Control Systems for Winders of Cold
Oct 2, 2020 In tension control systems, the node for dynamic compensation of disturbance caused by a change in the speed of the rolling stand of coldrolled sheet Hot strip rolling mills are characterised by a process which has many interactions, is distributed with dominant transport delays and has a lack of measurements due to the severe environment T Kataoka, H Sasao Advanced Control for Hot Rolling Mills SpringerLinkDec 31, 2015 The interstand tension inferential control systems are used to stabilize the rolling motor torque To stabilize the motor torque the electric drive system with the properties of the rolling(PDF) The Study of Continuous Rolling Mill Interstand
JPA Tension control method of continuous
SOLUTION: In a tension control method for rolling a work in a tensionless manner between at least first and second universal rolling mills, a motor of a master rolling mill Oct 27, 2022 The looper control of hot strip finishing mill is one of the most critical control items in hot strip rolling mill process It is a highly complex nonlinear system, with Looper and tension control in hot strip finishing mills based on Jul 1, 2007 Control of Strip Tension in a Rolling Mill Based on Loopers and Impedance Control A Steinboeck, G Mühlberger, A Kugi Engineering 2014 Abstract A Looper and tension control in hot rolling mills: A survey
A neurofuzzy system for looper tension control in rolling mills
Jan 1, 2005 The plant model is a rolling mill that uses a looper for tension control ( Fig 1 ) Tension is caused by the difference between the exit speed v1 in stand one and the entry speed v2 in stand two Looper height is related to looper storage length by the mass conservation principle and can be empirically approximated by (1) H (t)= 1 α+β L (t)Jun 16, 2004 The simplest scheme for modeling the rolling process considers the reduction of a strip thickness by passing the hot strip through a preset roll gap between two work rolls Each rolling standAdvanced Control Techniques for Rolling MillsOct 2, 2020 Abstract This article discusses the stages of tuning and adjustment of tension control systems for winders of coldrolled sheet mills using experimental frequency identification of the control object To successfully solve the problems of synthesis of a control system by frequency methods, initial structures of the control object have been Synthesis of Tension Control Systems for Winders of Cold Rolling Mills
Non‐linear optimal control for the hot‐steel rolling mill system
Sep 26, 2019 The control problem of the hotsteel rolling mill is thus formulated in two levels: (i) from to one computes the control inputs and that should be applied to the hotsteel roll mill system so as to assure that the angle of the looper and the tension on the strip will reach the desirable setpoints, (ii) the control inputs and become setpoints Control method of tension in rolling mills (1) Classifications Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths ofUSA Control method of tension in rolling mills (1)Abstract Looper and tension control is important in hot strip mills because it affects the strip quality as well as strip threading Moreover, the most difficult challange in the controller design and control performance comes from the A SURVEY OF THE LOOPERTENSION CONTROL TECHNOLOGY IN HOT ROLLING MILLS
Tandem rolling mill Wikipedia
A tandem rolling mill is a rolling mill with two or more closecoupled stands, where the reduction is achieved by the interstand tension(s) and the compressive force between the work rolls For mills rolling thinner strip, bridles may be added either at the entry and/or the exit to increase the strip tension near the adjacent stands further increasing their Various advanced methods have been developed to analyze and control rolling mills [6–11] Among the previous investigations, some notes focus on tension control problem in cold rolling mills [12, 13] There are numerous uncertainties and disturbances in the model of tandem cold rolling process Thus, the control strategy for cold rolling Robust Tension Control of Strip for 5Stand Tandem Cold Mills HindawiA roll gap and rolling mill technology, which is applied in the field of weld seam control in continuous cold rolling, can solve problems such as the excessive thickness of the head and tail of the steel coil, and achieve the effect of increasing the yield and reducing the rate of weld seam breakageMethod for rolling welding line under automatic control
Advanced Tension Control in Steel Rolling Mills
A rolling mill made of a sequence of rolling stands yielding the desired final steel bar section as the bar moves through the mill HiTension and HiSection are products of Danieli Automation SpA Enabling Sensing Technologies • Key to bar/billet tension control is the availability of accurate interstand section measurementsJul 1, 2007 Tension and looper control in finishing mills: ASR—Automatic Speed Regulator, ACR—Automatic Current Regulator A looper installed at interstand positions reduces tension variations by changing its angle, so it Looper and tension control in hot rolling mills: A surveyAug 1, 1990 A nonlinear statespace process model which represents the mill dynamics has been developed, and a control scheme is proposed which incorporates an Extended Kalman Filter for estimation of bar tension, and optimal state feedback to provide appropriate control action The bar tension estimation method is evaluated using Minimum Tension in a Merchant Bar Rolling Mill using Modern Control
Non‐linear optimal control for the hot‐steel rolling mill system
Sep 26, 2019 The control problem of the hotsteel rolling mill is thus formulated in two levels: (i) from ( 10) to ( 12) one computes the control inputs and that should be applied to the hotsteel roll mill system so as to assure that the angle of the looper and the tension on the strip will reach the desirable setpoints, (ii) the control inputs and become Oct 2, 2020 Abstract This article discusses the stages of tuning and adjustment of tension control systems for winders of coldrolled sheet mills using experimental frequency identification of the control object To successfully solve the problems of synthesis of a control system by frequency methods, initial structures of the control object have been Synthesis of Tension Control Systems for Winders of Cold Rolling Mills Control method of tension in rolling mills (2) USA (en) : Rolling mill stand screwdown position control USA (en) : Control device for successive rolling mill USA (en) 197212 USA Control method of tension in rolling mills (1)
Realtime tension control in a multistand rolling system
A new tension control strategy in a multistand rolling process is suggested The tension transfer phenomena is used in the design of the suggested controller The developed mathematical model is used to design a controller for the realtime control system A set of requirements for the realtime tension control is suggestedIn the control of the tension of a workpiece which is rolled by a tandem rolling mill, a tension control method for a rolling mill wherein the tension of a workpiece is controlled by a looperless tension control method employing no looper at the threading stage of the top end and at the tailout stage, and it is controlled by a tension control method US Patent for Tension control method for a rolling mill Patent Abstract Looper and tension control is important in hot strip mills because it affects the strip quality as well as strip threading Moreover, the most difficult challange in the controller design and control performance comes from the interaction between looper angle and strip tension Disturbances from several sources also cause a deterioration in control A SURVEY OF THE LOOPERTENSION CONTROL TECHNOLOGY IN HOT ROLLING MILLS
JPHA Tension control method for continuous rolling mill
PURPOSE: To control the tension between stands by adjusting a roll peripheral velocity extending from biting to a steady rolling start, and thereafter, a looper angle by a high frequency analysis of a tension fluctuation, respectively CONSTITUTION: By the tension control between stands of a continuous rolling mill, tension between the stands is A tandem rolling mill is a rolling mill with two or more closecoupled stands, where the reduction is achieved by the interstand tension(s) and the compressive force between the work rolls For mills rolling thinner strip, bridles may be added either at the entry and/or the exit to increase the strip tension near the adjacent stands further increasing their Tandem rolling mill WikipediaAn H/sup infinity / control design method was applied to the loop control of a wire rolling line Specifying robust stability and disturbance suppression performance, H/sup infinity / controllers were obtained Elements of their transfer matrices have the structure of the PID (proportional plus integral plus derivative) controller Simulations were used to compare Loop control system of wire rolling mill using H/sup infinity / control
How to use automation to improve productivity and quality in
Jan 1, 2013 To reduce the material tension along the mill two types of control are applied: minimum tension control and loop control Each is applied in different parts of the mill In the first part of mill, roughing and intermediate zone, where the bar section is larger; the minimum tension control is usedMILL CONTROL SYSTEM AND METHOD FOR CONTROL OF METAL STRIP ROLLING Marwan Simaan University of Central Florida John Pittner IS Choi, JA Rossiter, andPJ Fleming, "Looper and tension control in hot rolling mills: A survey", Journal of Process Control 17 (2007), 509521 Gerald Hearns Michael J Grimble, "Robust Multivariable MILL CONTROL SYSTEM AND METHOD FOR CONTROL OF