Simulation of an Active Control System in a Hot-Dip Galvanizing Line

Brüls, Olivier; Golinval, Jean‐Claude

doi:10.1007/978-94-010-0203-5_19

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…The final approach relies on noncontact active vibration control using electromagnetic actuators. [4][5][6] The difficulties in active vibration control of the strip arise from the fact that the strip must be considered as a multimodal system with many frequency modes. 7) It is very hard to describe the motion of the strip in a simple model because it moves in a three-dimensional space.…”

Section: Introductionmentioning

confidence: 99%

“…They used a proportional integral (PI) controller with a phase-lead compensator for electromagnet control. O. Bruls et al 6) used a model that neglected the global motion of the strip and the CraigBampton substructuring technique in model reduction. Although they employed proportional and derivative (PD) © 2013 ISIJ feedback control in the simulation, they did not consider spill-over.…”

Section: Introductionmentioning

confidence: 99%

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Active Vibration and Flatness Control of a Strip in a Continuous Galvanizing Line using Positive Position Feedback Control

et al. 2013

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In this paper, we propose active vibration control of a strip in a continuous galvanizing line (CGL) using positive position feedback (PPF) control. The control system includes five pairs of electromagnetic actuators and controllers. First, the overall system was modeled using the three-dimensional finite element modeling (FEM) package ANSYS. The Krylov subspace technique was then used to reduce the order of the model. Finally, PPF control was applied to control the vibration. The stability condition was derived from the stiffness matrix concept, which shows the relationship between the DC gain of the controller and that of the system. Root locus analysis was performed to validate the stability condition derived. The results of the software simulations and the experiments demonstrate the effectiveness of the proposed controller under various tension conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active Vibration and Flatness Control of a Strip in a Continuous Galvanizing Line using Positive Position Feedback Control

et al. 2013

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Research on Vibration Control Method of Steel Strip for a Continuous Hot-dip Galvanizing Line

Yan

Guo

et al. 2012

ISIJ Int.

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Nonlinear vibration of axially moving steel strip with tension near the air knife box during continuous hot-dip galvanizing process is investigated. A model of strip vibration for cooling section is established. Governing equations of the model are derived through the Hamilton's principle. Effect of speed, tension, molten zinc, oscillation of touch rolls and nonlinear wind load on strip vibration is considered. The reasonability of boundary conditions of the model is confirmed by comparison of results from theoretical method and numerical simulation. Averaging method is employed in solving the equations and obtaining displacement response. The relation between amplitude near the air knife and production parameters is studied and further solutions of vibration control is presented. The research reveals that speed of strip has noticeable effect on amplitude near the air knife. It will be more difficult to reduce vibration with the increase of speed. Larger tension is in favor of keeping away from peaks of amplitude by using speed adjustment. A scheme of vibration control based upon averaging method can meet the requirement of production. A vibration suppression proposal by improving support stiffness of touch rolls is suggested.KEY WORDS: averaging method; wind load of air knife; strip tension; strip speed; touch roll.

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Simulation of an Active Control System in a Hot-Dip Galvanizing Line

Cited by 2 publications

References 5 publications

Active Vibration and Flatness Control of a Strip in a Continuous Galvanizing Line using Positive Position Feedback Control

Active Vibration and Flatness Control of a Strip in a Continuous Galvanizing Line using Positive Position Feedback Control

Research on Vibration Control Method of Steel Strip for a Continuous Hot-dip Galvanizing Line

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