feedback and feed forward agc in 4high reversible mill

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Rolling Technology and Theory for the Last 100 Years: The ...

As there was close relation between mill modulus and rolling properties in this way, the studies on the characteristic of rolling mills in which mill modulus was considered and the studies on the optimum mill modulus were performed. 29,30,31,32,33,34,35,36,37,38) As mentioned above, the optimum mill modulus is different in the stages of rolling ...

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MetalsMaster - Honeywell Process

MetalsMaster's AGC and HGC utilize the measurement from its sensors to offer full control of the sheet thickness utilising a combination of speed, tension, load or gap whilst optimising mill speed. AFC not only controls shape via sprays, roll bending and roll tilt but also optimizes the mill using all the parameters from both AGC/HGC and AFC.

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Rolling Mills for Copper and Copper Alloys

Four high single stand reversing cold rolling mills for mill finishing process. Strip width up to 1200 mm. Rolling Mills can be designed as roughing/finishing or only finishing depending on the end use. Skin pass mills are also available. Basic Features: Control systems: Feedback and Feed-forward AGC, Mass flow and AFC (Automatic Flatness Control)

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Strip Thickness Control of Cold Rolling Mill with Roll ...

In rolling mill, the accuracy and quality of the strip exit thickness are very important factors. To realize high accuracy in the strip exit thickness, the Automatic Gauge Control (AGC) system is used. Because of roll eccentricity in backup rolls, the exit thickness deviates periodically. In this paper, we design PI controller in outer loop for the strip exit …

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The Optimal Control Strategy for Pure Delay Inertia ...

The mathematical models including air cooling model, water cooling model, feedforward control model, feedback control model and self-learning model …

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Hot and cold strip rolling processes - ScienceDirect

In Fig. 9, some results are given for thin strip rolling on a 4-high mill. The dimensions are described in the figure. A pure VP behaviour has been assumed to improve convergence, with: (54) σ ¯ = 520 · 3 · 10-4 + ε ¯ 0.21 · 3 · ε ¯ ˙ 0.13.

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Control - Forum for Automation & Control Professionals

Control is the global online community of control & automation professionals.

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AGC - SlideShare

AGC depends on main four factorsAGC depends on main four factors Thickness feed-forward controlThickness feed-forward control Thickness feedback controlThickness feedback control Mass flow control.Mass flow control. Speed feed-forward controlSpeed feed-forward control 16.

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Shape and Gauge Control of Strip in a Cold Rolling Mill ...

Fig 1 Thickness control in a single stand cold reversing mill. For the single stand cold reversing mill, the external controllers are (i) the tension control by torque (TCT) in which the entry / exit tensions are kept constant through the torque regulated by the TC that, in turn, exploits the motors applied to the coiler / uncoiler reels, (ii) the gauge control, feed-back via gap …

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Co-translational assembly and localized translation of ...

Lautier et al. have systematically investigated the co-translational events targeting the assembly of the nuclear pore complex (NPC). They reveal that several nucleoporins establish binary interactions during translation in the cytoplasm and that a subset of them are translated at NPCs, their nascent chains being recognized by karyopherins.

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Automatic Gauge Control (AGC) - Koteko

Automatic Gauge Control (AGC) The main target of the AGC control is to maintain a good thickness tolerance over the entire range of products in varying process conditions undependent of different materials, alloys, dimensions. A system is offered with an adaptive algorithm, different control strategies are available depending on the mill to realize the desired […]

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High Speed Machining (HSM) [ Definitive Guide ]

High speed machining (HSM)–also called trochoidal milling, adaptive clearing, volumill, and more–is a milling technique that can increase material removal rates, reduce cycle time, and increase tool life. This video from my CNC Chef series for Cutting Tool Engineering Magazine gives a quick What is High Speed Machining (HSM) intro:

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Peer Reviewed Journal - IJERA

International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research ..

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US4292825A - Gauge and tension control system for tandem ...

A gauge and tension control system for a tandem mill comprises a delivered strip thickness deviation calculating unit for detecting output strip thickness at each of rolling stands, a tension calculating unit for arithmetically determining interstand tensions between two adjacent rolling stands on the basis of armature currents of drive motors and rolling loads at every rolling …

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US3906764A - Rolling mill control method and apparatus ...

US3906764A US522364A US52236474A US3906764A US 3906764 A US3906764 A US 3906764A US 522364 A US522364 A US 522364A US 52236474 A US52236474 A US 52236474A US 3906764 A US3906764 A US 3906764A Authority US United States Prior art keywords signal lock mill roll roll gap Prior art date Legal status (The legal status …

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Prediction for Manufacturing Factors in a Steel Plate ...

(AGC) in steel plate production. AGC has been successfully applied to commercial rolling mill system to select required control values. Usually, the conventional AGC systems are based on Proportional Integral Derivative (PID) controller [13] [15], a feedback-loop mechanism adjusting control val-ues to address target values. Such PID controllers ...

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56´´ Mesta 5 Stand 4-hi Tandem Cold Mill (used) | VX Machinery

- 22 Rolls, located in Temper Mill area Backup Roll Chocks: 36 (ie: 2 per roll, enough for 9 top rolls and 9 bottom rolls) Work Roll Chocks: 40 (ie: 2 per roll, enough for 10 top rolls and 10 bottom rolls) Gauges: X-Ray: Exit Stands 1 & 5, Accuray 7000 Source Gauges AGC: - Stand 1: X-Ray Feedback to Screws, Feed-Forward AGC

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Power Systems Control And Stability 2nd Ed By P.m ...

IfCSBis the sum of the ratings of the machines under governor control, and CS,,is the sum of the ratings of all machines, then the effective pu regulation is given by RucR = R u ( C S B / C S, B ) (2.30) Similarly, if a system base other than that of the machine is used in a stability study, the change in mechanical power in pu on the system ...

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Heavy Plates With Special Process Designs To Meet Extreme ...

2. PLATE MILL LAYOUT AND EQUIPMENT. The layout of the plate mill (Figure 3) is determined by the following design features: Sufficient and flexible reheating facilities: three pusher-type furnaces (i.e. up to seven slab rows can be charged in parallel), three bogie hearth furnaces (esp. for ingots or small size slabs or non-ferrous materials); High-pressure descaling …

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IRJET-Volume6 Issue3

IRJET Journal Volume6 Issue3 March 2019. Volume 6- Issue 3 - March 2019: 01: The Usability of HCI in Smart Home-Amirah Alshammari, Haneen Alhadeaf, Norah Alotaibi, Sabreen Alrasheedi, Master Prince

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Speed & Feed - High Performance End Mills - Melin Tool Company

5565 Venture Drive, Cleveland, Ohio 44130 PHONE: (800) 521-1078 or (216) 362-4200 | FAX: (800) 521-1558 or (216) 362-4230

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Technological control for cold rolling processes

Tension feed-forward control The tension feed-forward control responds to entry thickness deviations and applies a suitable adjust-ment to the coiler torque in order to consider the in-teractions between roll gap and tension. Important sensors in a cold rolling mill Laser speed sensor Thickness gauge ABB Stressometer ABB Strip scanner

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Basic Electronics [1 ed.] 9780071333108 ... - DOKUMEN.PUB

For an NPN transistor, the forward-biased junction (biased by the internal supply in the resistance mode) from base to emitter should be checked as shown in Fig. 3.13(a) and results in a reading that will typically fall in the range of 100 to a few kilo-ohms. The reverse-biased Fig. 3.13 (a) Forward-biased BE junction (b) Reverse-biased CB junction

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Roadmap on structured light - IOPscience

1 School of Mathematics and Physics, The University of Queensland, St Lucia, QLD, 4072, Australia . 2 School of Physics, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa . 3 H H Wills Physics Laboratory, Tyndall Avenue, Bristol BS8 1TL, UK . 4 School of Chemistry, University of East Anglia, Norwich Research Park, Norwich …

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Feed-forward . Feedback /. Furnace pressure . Temperature profile . Hot rolling shop： Mill . 4-high finishing mill ... AGC: automatic gauge control ...

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Technological Controls for Cold Rolling Mill - ABB

AGC for break down mills Depending on the sensor concept based on cus - tomer needs different thickness control strate - gies are possible: • Thickness feedback control • Thickness feed-forward control • Mass flow control • Speed feed-forward control • Roll eccentricity control • Tension feed-forward control Thickness feedback control

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Cognitive control persistently enhances hippocampal ...

a, ΔF/F time series and 13 session-averaged colour-coded room and arena frame-specific activity maps from a 565-neuron ensemble during pretraining. Momentary likelihood a cell is active: minimum ...

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Steel Rolling Technology Handbook (2nd Revised Edition)

Feed-forward AGC for Tandem Cold Mill Flow-Stress Feed-Forward AGC Non-Interactive AGC ... The current may be ac or dc, and the polarity of the electrode may be positive (reverse polarity) or negative (straight polarity). The choice depends on the type of electrode, type of metals to be welded, and depth of the heated zone. ... Reversing 4-high ...

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기술용어 | 앓음다운 세상 사는 이야기.

A 암페어 Abbe's Principle 아베의 원리 aberration 수차 ablation 융제 ablator 애블레이터 ABM 탄도탄 요격 미사일 abnormal explosion 이상 폭발 abrasion 마모 abrasion hardness 마모 경도 abrasion tester..

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US3531961A - Method and system for controlling strip ...

US3531961A US712766A US3531961DA US3531961A US 3531961 A US3531961 A US 3531961A US 712766 A US712766 A US 712766A US 3531961D A US3531961D A US 3531961DA US 3531961 A US3531961 A US 3531961A Authority US United States Prior art keywords gauge stand strip mill control Prior art date Legal status (The legal …

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Computer simulation of dynamic characteristics of tandem ...

Various methods such as BISRA AGC, feed forward AGC, and feedback AGC have been proposed and applied for the control of the rolling phenomena in this field. To improve the strip gage control system, main factors disturbing strip gage accuracy must be investigated and control system must be designed to prevent the disturbance (Gumi, et al., 1994 ...

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Dynamic Optimization of Feedforward Automatic Gauge ...

The mathematical model of FF-AGC can be expressed as follows; where AS is the regulated value of mill gap; M is the strip modulus, which is a function of rolling temperature T and the chemical component of the rolled material c, that is, M=f ( T, c, Hn) Q = /( T, C, Hn) ; and CP is the mill modulus of a stand.

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A positive autoregulatory loop of Jak-STAT signaling ...

This feed-forward loop provides a positive mechanism to direct the progenitor stem cells towards astrogliogenesis. We hypothesize that sufficient activation of the Jak-STAT pathway functions as a switch for the transition from neurogenesis to gliogenesis, which essentially determines the timing for astrocyte differentiation.

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Targeting the eIF4F Translation Initiation Complex: A ...

Feed-forward loops drive malignancy—MYC and eIF4F. The MYC transcription factor is one of the most frequently activated oncogenes in human cancers and has been repeatedly associated with poor prognosis and decreased patient survival ().A major consequence of elevated MYC activity is a dramatic elevation in protein synthesis due to increased …

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High Feed End Mills - Helical Solutions

High Feed End Mills - Steels up to 45 Rc - Variable Pitch - Reduced Neck The specifically engineered end profile of this fully stocked offering of High Feed End Mills reduces cutting forces, while its reduced neck geometry provides maximum strength in …

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BLUEPRINT FOR EXCELLENCE | Primetals Technologies

MILL CONTROL. Automatic gauge control (AGC) of strip consists of conventional feed forward AGC (FF-AGC), roll position control AGC (BISRA-AGC) based on a gauge meter formula, and also monitor-AGC. In addition to these, mass flow AGC and an AGC system based on decoupling control are included.

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circuit - dict.yqie

A closed, usually circular line that goes around an object or area. (2) The region enclosed by such a line.See Synonyms at circumference. (3) A path or route the complete traversal of which without local change of direction requires returning to the starting point. (4) The act of following such a path or route. (5)

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Smith Prediction Monitor AGC System Based on Fuzzy …

Aimed at a 4-high cold rolling mill, simulation analysis for classical Smith predictor monitor AGC and ADRC-Smith predictor Monitor AGC is used. ...

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Typical 5-stand tandem cold mill Instrumentation which ...

Configuring the systems of the HGC, AGC, and RAC controller of Mill 5000 is described in [10]. Below is a summary of the AGC system and a description of the DDC functions. ...