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Non-linear PID Tension Control in a Winding Process with a Contact Roll and a Nip Roll (접압롤 및 보조닙롤이 있는 권취공정에서의 장력의 비선형 PID제어)

  • 신기현;김규태;천성민
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.2
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    • pp.45-52
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    • 1998
  • The contact roll is often used to regulate the winding tension as well as the entrained air in a wound roll by adjusting the contact force to the winding roll. But the contact force generated by other rolls, like assistant nip rolls, in a winding(or roll changing) process may act as disturbance to the control of the winding tension. In this paper, the mechanism of a roll change process is analysed. Ana, the behavior of the contact and the nip rolls are mathematically modeled. A nonlinear PID(NPID) controller is designed to control the winding tension and to reject the effect of disturbance generated by the nip roll on the winding tension variation. Computer simulation study showed that the performance of the suggested NPID controller is improved compared with that of the PID controller in controlling the winding tension and in rejecting the effect of the disturbance.

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Non-linear tension control in a winding process with a contact roll and a nip roll (접압롤 및 보조롤이 있는 권취공정에서의 장력의 비선형 제어)

  • 신기현;김규태;천성민
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1996.11a
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    • pp.748-753
    • /
    • 1996
  • The contact roll is often used to regulate the winding tension as well as the entrained air in a wound roli by adjusting the contact force to the winding roll. But the contact force generated by other rolls, like assistant nip rolls, in a winding(or roll changing) process may act as disturbance to the control of the winding tension. In this paper, the mechanism of a roll change process is analyzed. And, the behavior of the contact and the assistant nip rolls are mathematically modeled. A nonlinear PID(NPID) controller is designed to control the winding tension and to reject the effect of disturbance generated by the assistant nip roll on the winding tension variation. Computer simulation study showed that the performance of the suggested NPID controller is improved compared with that of the PID controller in con trolling the winding tension and in rejecting the effect of the disturbance.

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