Resumen de A Self-Starting Control Chart for Linear Profiles
Changliang Zou, Chunguang Zhou, Zhaojun Wang, Fugee Tsung
Recursive residuals are the basis of this self-starting control chart for monitoring linear profiles when the nominal values of the process parameters are unknown. The chart can detect a shift in the intercept, the slope, or the standard deviation. Favorable properties of the plot statistics permit the proposed chart to be designed to match any desired in-control average run length. Simulated results show good charting performance across a range of possible shifts when process parameters are unknown. The chart is particularly useful during the startup stage of a process.
