A Process-oriented basis representation (POBREP) can be used to express a multivariate quality vector as a linear combination of fault patterns, plus a residual. Monitoring the estimated coefficients of the linear relationship is especially useful when the quality vector contains the same kind of measurements at different locations on a product. Such an application is the subject of this study. POBREPs are derived for different types of quality problems for a 9-axis CNC drilling machine; complicated geometry involved in the drilling operation makes the derivation process a challenging task. Therefore a thorough treatment of the derivation process is presented. Next, diagnostic power of the POBREP is demonstrated by an application to multivariate process data.
Bölüm | Makaleler |
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Yazarlar | |
Yayımlanma Tarihi | 15 Haziran 2009 |
Gönderilme Tarihi | 22 Ekim 2017 |
Yayımlandığı Sayı | Yıl 2009 Cilt: 1 Sayı: 2 |