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- Title
MEWMA Control Chart and Process Capability Indices for Simple Linear Profiles with Within-profile Autocorrelation.
- Authors
Chiang, Jyun‐You; Lio, Y. L.; Tsai, Tzong‐Ru
- Abstract
A multivariate exponentially weighted moving average (MEWMA) control chart is proposed for detecting process shifts during the phase II monitoring of simple linear profiles (SLPs) in the presence of within-profile autocorrelation. The proposed control chart is called MEWMA-SLP. Furthermore, two process capability indices are proposed for evaluating the capability of in-control SLP processes, and their utilization is demonstrated through examples. Intensive simulations reveal that the MEWMA-SLP chart is more sensitive than existing control charts in detecting profile shifts. Copyright © 2016 John Wiley & Sons, Ltd.
- Subjects
QUALITY control charts; AUTOCORRELATION (Statistics); MOVING average process; RUN-length encoding; MULTIVARIATE analysis
- Publication
Quality & Reliability Engineering International, 2017, Vol 33, Issue 5, p1083
- ISSN
0748-8017
- Publication type
Article
- DOI
10.1002/qre.2101