MIMO EWMA-CUSUM condition-based Statistical Process Control in Manufacturing Processes

Y. Ou, Jinwen Hu, Xiang Li, T. Le
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引用次数: 1

Abstract

To meet the challenges of the big data age, an urgent requirement from diverse manufacturing industries is to develop a systematic time-variant methodology to make good use of the condition parameters to benefit more from the monitoring point of view. With condition-based Statistical Process Control (SPC), we develop a time-variant Exponentially Weighted Moving Average-Cumulative Sum (EWMA-CUSUM) anomaly detection mechanism which can monitor real-time multi-condition parameters, as well as multi-output quality characteristics simultaneously and efficiently. This technique enables the process user to conduct the visualization in real-time, thus, affording the representation of the information from huge volume of data. In order to demonstrate the implementation for the monitoring of a real manufacturing process, the Wire Electrochemical Tuning (WECT) process is adopted as a practical application. The proposed mechanism is superior to the conventional univariate charting mechanism by 18.75% in terms of detection accuracy and it has great potential to be employed in a large area of factorial applications.
基于条件的MIMO EWMA-CUSUM制造过程统计控制
为了应对大数据时代的挑战,从监测的角度来看,迫切需要开发一种系统的时变方法,以充分利用状态参数,从而获得更多的收益。利用基于条件的统计过程控制(SPC),开发了一种时变指数加权移动平均累积和(EWMA-CUSUM)异常检测机制,该机制可以同时有效地监测实时多条件参数和多输出质量特征。该技术使流程用户能够实时地进行可视化,从而从海量数据中提供信息的表示。为了演示该方法在实际制造过程监控中的实现,本文采用了线材电化学调谐(WECT)过程作为实际应用。所提出的机制在检测精度方面优于传统的单变量图表机制18.75%,并且在大范围的析因应用中具有很大的潜力。
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