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Re‐evaluation of performance for adaptive charts: Viewpoints of inspection efficiency and efforts

Yan‐Kwang Chen (Department of Logistics Engineering and Management, National Taichung Institute of Technology, Taichung, Taiwan)
Hung‐Chang Liao (Department of Health Services Administration, Chung‐Shan Medical University, Taichung, Taiwan)
Fei‐Rung Chiu (Department of Industrial Education and Technology, National Changhua University of Education, Changhua, Taiwan)

International Journal of Quality & Reliability Management

ISSN: 0265-671X

Article publication date: 27 June 2008

Abstract

Purpose

The purpose of this paper is to re‐evaluate the performance of the adaptive control charts which allow some of their design parameters to change during production depending on the collected information from samples over time. Instead of employing a single performance measure (average time to signal process changes), a set of measures, associated with the inspection efficiency and effort, is taken into account in the evaluation process.

Design/methodology/approach

A multivariate analysis of variation (MANOVA) approach along with the post hoc analysis are applied to investigate the performance of different adaptive control charts based on different measures.

Findings

The findings indicate that different adaptive control charts may have different performance, depending on the measure regarded and the value of shift in process mean. In general, the VSSC, VSSI, and VSI control charts would be recommended for a process with a small, moderate, and large shift, respectively. The SS chart is still the best choice for a process with an extremely large shift.

Research limitations/implications

Up to now, the proposed procedure has been developed for the comparative analyses of adaptive charts, but it could be adjusted for other adaptive charts as well.

Originality/value

This paper provides a review of the performance of adaptive control charts from a novel perspective.

Keywords

Citation

Chen, Y., Liao, H. and Chiu, F. (2008), "Re‐evaluation of performance for adaptive charts: Viewpoints of inspection efficiency and efforts", International Journal of Quality & Reliability Management, Vol. 25 No. 6, pp. 621-635. https://doi.org/10.1108/02656710810881917

Publisher

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Emerald Group Publishing Limited

Copyright © 2008, Emerald Group Publishing Limited