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Combined Control Charts for Forecast-Based Monitoring Schemes

Summary: [This abstract is based on the authors' abstract.]

The problem of monitoring autocorrelated process data is discussed. Several forecast-based monitoring schemes are evaluated using a Markov chain approach to determine types of process shift and evaluation criteria. A combined exponentially weighted moving average/Shewhart control chart applied to appropriate one-step-ahead forecast errors is appropriate for general use.

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  • Topics: Statistical Process Control (SPC)
  • Keywords: Time series,Statistical process control (SPC),Exponentially weighted moving average control charts (EWMA)
  • Author: Lin, Winnie S. W.; Adams, Benjamin M.
  • Journal: Journal of Quality Technology