Author

Shumin Zhang

Alt Title

Simplification of the economic design of a joint X-bar and R-control chart

Publication Date

2000

Document Type

Dissertation/Thesis

Degree Name

M.S. (Master of Science)

Department

Department of Industrial Engineering

LCSH

Quality control--Charts, diagrams, etc

Abstract

This research addresses the problem of simplifying the complex model description and computations in the economic design of a joint X - and R- control chart. A methodology is explored to deal with this problem, after the "basic" model and "simplified" model are formulated to this joint economic design. To prepare for modeling, a combination of cycle-time and system tree figures is used to illustrate the system states and alternative paths in the joint quality control system. These views are helpful in understanding the process with using X and R control charts in statistical control. Computational experiments in simulation are conducted to compare the total expected losscosts between the two models, in order to evaluate whether the "optimal" solutions from the "simplified" model are available to the joint economic design. The experimental results demonstrate that the two models can have very close cost in most cases. This means, the "simplified" model is able to become a new method, which would make joint economic design easier, quicker, and more feasible with computer simulation in statistical process control.

Comments

Includes bibliographical references (pages [55]-56)

Extent

v, 64 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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