自調式權重EWMA 管制圖之應用研究

The Study on the Application of Self-Weighting EWMA Control Chart

葉俊賢、陳琪琪、陳格致、黃建榮、莊鎮寧
J. H. Yeh, C. C. Chen, G. J. Chen, C. J. Huang and J. N. Jhuang

正修科技大學 工業工程與管理系

摘要

  3C 電子產品的製程中,溫度特性便是 影響主機板品質重要的因素之一,因此,對 於製程溫度狀態判讀及監控,本研究將以 EWMA 管制圖作為製程狀態判讀的工具, 同時修訂原EWMA 管制圖之權重模式,建 立自調式EWMA 管制圖。研究結果顯示, 自調式EWMA 管制圖有著放大製程狀態的 特性,能夠提早反應製程狀態,有利於監控 人員在製程監測時,作為製程的監測的管制 圖,此外,本研究以量測技術結合電腦化監 控系統整合於作業軟體Office Excel 程式之 中,提供相關業者進行改善產品品質及製程 監控效率之參考。

關鍵字:自調式權重EWMA 管制圖、溫度 量測系統、品質特性、製程監控

ABSTRACT

  According to the manufacturing process of electrical products, the variation of temperature is one of the important factors that influence the motherboard quality. In order to enhance monitoring power in manufacturing, a new modified EWMA control chart was established and verified as the tool in the manufacturing process that revises the Weight mode of original EWMA control chart. Results show that self-Weighting EWMA control chart can detect the uncertainty early and respond the process state that is fine for manufacturing process monitoring when the process adopts the real time process control. Furthermore, the study uses measurement techniques with computerized monitoring system integrated Microsoft Office software “EXCEL”, it offers a good reference to the relevant industry for improving product quality and efficiency of process control.

Keywords: Self-Weighting EWMA control chart; Temperature Measurement System; Quality Characteristics; Process Monitoring