累積和控制圖在企業(yè)質(zhì)量控制中的應(yīng)用-展示頁
2024-08-14 04:09本頁面
【正文】 預(yù)防由變異所可能引起的問題，使過程持續(xù)穩(wěn)定地提供滿足要求的輸出，并不斷得到改進(jìn)。關(guān)鍵詞：休哈特控制圖，累積和控制圖 ，序貫概率比檢驗(yàn)，平均鏈長Abstract: Shewhart chart is a tool for distincting between normal and abnormal fluctuations in the process and determing whether the process is in control. However, The judgement of the Shewhart chart for whether the production process is normal, is based on the isolated result of the observation. Its Cpacity for detecting large shift is extremely high, but for the small shift is very low. Accumulative sum chart use averagelinked to control the two types of error, whose judgement for the process is based on the results of previous is very useful in detecting the sudden tiny changes of the process average. Therefore, according to the data from Hejian Hengtai Die Casting factory ,this paper will use Shewhart chart and Accumulative sum chart to analyze whether the property value of the quality in the production process is result will show that Accumulative sum chart has higher sensitivity in the abnormal process, thus demonstrate its superiority.Key words: Shewhart chart，Accumulative sum chart ， Sequential probability ratio test ，averagelinked一、引言在質(zhì)量管理過程中，可以應(yīng)用很多技術(shù)和方法，其中統(tǒng)計(jì)技術(shù)是很有價(jià)值的一類方法。累積和控制圖用“平均鏈長”來控制兩類錯(cuò)誤，對過程的判斷以歷次觀察結(jié)果為依據(jù)，對發(fā)現(xiàn)過程平均值的突然的微小的變化特別有用。目 錄中文摘要………………………………………………………………………2英文摘要………………………………………………………………………2正文……………………………………………………………………………2一、引言………………………………………………………………………3二、休哈特控制圖……………………………………………………………3（一）休哈特控制圖原理和缺點(diǎn)……………………………………………3（二）不合格品率控制圖……………………………………………………4三、累積和控制圖…………………………………………………………..4（一）累積和控制圖的發(fā)展及使用條件…………………………………..4（二）累積和控制圖原理…………………………………………………..5（三）累積和控制圖參數(shù)選取方法………………………………………..8四、實(shí)證分析…………………………………………………………………10五、結(jié)束語……………………………………………………………………14參考文獻(xiàn)………………………………………………………………………15累積和控制圖在企業(yè)質(zhì)量控制中的應(yīng)用摘要：休哈特控制圖是區(qū)分過程中正常波動(dòng)和異常波動(dòng)，并判斷過程是否處于控制狀態(tài)的一種工具。但是，常規(guī)控制圖對生產(chǎn)過程是否異常的判斷，是以孤立的一次觀測結(jié)果為
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