• Title/Summary/Keyword: 품질모니터링

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A Study of Remote Welding Quanlity Monitoring System using TCP/IP in Resistance Spot Welding (TCP/IP 기반의 원격 저항 점 용접 품질 모니터링 시스템에 관한 연구)

  • 최윤석;이세헌
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.04a
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    • pp.320-323
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    • 2001

  • Nowadays, computer network has been rapidly developed. And we have made efforts to use it in wide field. So we can exchange data without spacial restriction using internet. If we develop monitoring system using internet, we have the effect of reducing time and space. Therefore, in this paper, we developed TCP/IP network and client/server system. And We applied them to resistance spot welding quality monitoring system.

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EWMA control charts for monitoring three parameter regions (3개의 모수영역을 모니터링하는 EWMA 관리도)

  • Yukyung, Kim;Jaeheon, Lee
    • The Korean Journal of Applied Statistics
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    • v.35 no.6
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    • pp.725-737
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    • 2022

  • In the standard assumption of statistical process monitoring (SPM) under consideration, the in-control region of the control parameter of quality characteristic consists of a single point. However, if small deviations from the ideal situation may not be of practical importance, the parametric space can consist of three regions: In-control, indifference, and out-of-control. In this paper, we propose two exponentially weighted moving average (EWMA) charting procedures applicable to the situation with three parameter regions, and compare the efficiency of the proposed procedures with the Shewhart chart and the cumulative sum (CUSUM) chart.

  • https://doi.org/10.5351/KJAS.2022.35.6.725 인용 PDF KSCI