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An Analysis of Four Spectral Control Charts

Summary: [This abstract is based on the author's abstract.]Spectral control charts, based on the periodogram evaluated at the Fourier frequencies, are used to detect the onset of periodic behavior. In this study, two additional spectral charts that use established periodogram tests are proposed. Comparison of the average run length of these charts evaluate how well the methods detect both simple and compound periodic behavior corresponding to both Fourier and non-Fourier frequencies. Comparisons using industrial data sets illustrate the strengths and weaknesses of each procedure.

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  • Topics: Quality Control
  • Keywords: Average run length (ARL),Fourier analysis,Monte Carlo methods,Quality control (QC),Time series
  • Author: McSweeney, Laura A.
  • Journal: Quality Engineering