ＧＭＡ溶接におけるアークセンサの感度向上と信頼性改善に関する研究　（第１報）　直流オープンアークＭＩＧ／ＭＡＧ溶接におけるアークセンサの数学モデル化

DOI 被引用文献4件

書誌事項

タイトル別名
  • A Study of the Improvement of the Sensitivity and the Reliability of the Arc Sensor in GMA Welding. (1st Report). Modelling of the Arc Sensor for DC MIG/MAG Welding in Open Arc Mode.
  • A Study of the Improvement of the Sensitivity and the Reliability of the Arc Sensor in GMA Welding (1st Report)
  • GMA溶接におけるアークセンサの感度向上と信頼性改善に関する研究(第1報)

抄録

A nonlinear model has been developed to describe the relationships between the output (welding current and voltage) and the input (torch height) of through-the-arc sensor (simply called arc sensor) in DC MIG/MAG welding in open arc mode, and it is expressed by following five equations:<BR>Ut=uao+(Ra+Re)I+(Eai+aiI)(Lt-Le)<BR>LwdI/dt+(Ks+Rc)I+Ut=Us<BR>dLe/dt=Vf-AI/(1-BJe)<BR>Je=∫t t-ΔtI2(τ)dτ<BR>Re=∫Le o r(Jz)dZ<BR>All values of the parameters in the model were identified in the case of welding with both mild and stainless steel wires (1.2 mm diameter) and the shielding gas of 100%Ar. The simulated results based on the model have shown quite good agreements with the experimental.<BR>On ther other hand, a linearized model of the arc sensor has also been drived from the nonlinear model under the hypothesis of any variable only showing a smaller variation around a given operating point, and it's form is shown as follows:<BR>dUt/dt-Kw1dI/dt-Kw2dLe/dt=Kw3dLT/dt<BR>Lwd2I/dt2+Kw4dI/dt+Kw2dLE/dt=-Kw3dI/dt<BR>d2Le/dt2+Ke1dLe/dt=-Ke2dI/dt<BR>Of course, some other features, for instance, the dynamic characteristics of electrode wire melting in GMA welding have also been made clear by the present work.

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詳細情報 詳細情報について

  • CRID
    1390282679699633536
  • NII論文ID
    130003764493
  • DOI
    10.2207/qjjws.14.99
  • COI
    1:CAS:528:DyaK28Xit1KntLg%3D
  • ISSN
    24348252
    02884771
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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