Verifying Measurement Uncertainty Using a Control Chart With Dynamic Control Limits

Published

September 1, 2007

Author(s)

Jun-Feng Song, Theodore V. Vorburger

Abstract

A control chart with dynamic control limit is proposed for promoting the developing process of an uncertainty budget, and verifying the developed measurement uncertainty. The up and low dynamic control limit, 2 sd, is calculated from the updated mean, , and standard deviation, sd, from the measurement history for a check standard, and is compared with the fixed control limit, y CL, calculated from the uncertainty budget of the check standard. If the dynamic control limit is close to the fixed control limit, which indicates that the measurement reproducibility for the check standard supports the estimated uncertainty of measurement. Otherwise, the uncertainty of measurement may be either over- or under-estimated, and may need to be revised.

Proceedings Title

Proceedings of 2007 Measurement Science Conference

Conference Dates

January 22-26, 2007

Conference Location

Long Beach, CA

Conference Title

2007 Measurement Science Conference

Pub Type

Conferences

Keywords

check standard, control chart, control limit, measurement quality control, measurement uncertainty, uncertainty budget

Citation

Song, J. and Vorburger, T. (2007), Verifying Measurement Uncertainty Using a Control Chart With Dynamic Control Limits, Proceedings of 2007 Measurement Science Conference, Long Beach, CA (Accessed April 25, 2024)