Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/51977
Title: A study of new and advanced control charts for two categories of time related processes
Authors: DENG PEIPEI
Keywords: Circle Chart, Periodic Process, Cyclic Pattern, Transformations, FMEWMA Chart, Gumbel’s Bivariate Exponential Distribution
Issue Date: 10-Oct-2013
Source: DENG PEIPEI (2013-10-10). A study of new and advanced control charts for two categories of time related processes. ScholarBank@NUS Repository.
Abstract: Two categories of time-related processes monitoring are studied in this thesis: periodic process and time between events (TBE) data monitoring. Periodical processes are common and important in practice. Limited works have considered such process monitoring with periodicity as an inherent property. A circle chart is proposed for different types of periodic processes: normal, extreme-value and multivariate normal distribution, etc. Individual procedure and transformation techniques are presented. On the other hand, this study considers advanced control charts for small shifts detection: a multivariate exponentially weighted moving average control chart with a full smoothing matrix (FMEWMA). It is designed for a Gumbel?s bivariate exponential distribution commonly used to model practical TBE data. The principle of the chart design is to enlarge the test statistics through the selection of off-diagonal elements under certain shifts. A double square root transformation is further applied for the performance improvement and compared with the raw data monitoring.
URI: http://scholarbank.nus.edu.sg/handle/10635/51977
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
DengPP.pdf1.38 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

133
checked on Dec 18, 2017

Download(s)

250
checked on Dec 18, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.