Economic Selection of the Optimal Process Mean Using Sequential Inspection to Reduce the Effect of Measurement Errors

Park, Hwan-Su; Chang, Young-Soon

Journal of Korean Society for Quality Management > Volume 34(2); 2006 > Article

Journal of Korean Society for Quality Management 2006;34(2): 12-.

측정오차를 고려한 최적 공정평균의 경제적 설정 - 축차검사의 활용

박환수¹, 장영순²

¹한국과학기술원 산업공학과
²명지대학교 경영학과

Economic Selection of the Optimal Process Mean Using Sequential Inspection to Reduce the Effect of Measurement Errors

Hwan-Su Park¹, Young-Soon Chang²

¹Department of Industrial Engineering, Korea Advanced Institute of Science and Technology
²Department of Business Administration, Myongji University

ABSTRACT

This paper considers the problem of selecting the most profitable process mean for production processes where measurement errors exist in inspection systems. For such situations, a sequential inspection procedure is proposed to reduce measurement errors. The decision to accept, reject, or take an additional inspection of an item is made at every measurement point until the number of repeated measurements reaches its upper bound. An expected profit model is constructed and the optimal process mean, the cut-off values, and the upper bound of the number of repeated measurements are obtained when accepted(rejected) items are sold at regular(reduced) price. A numerical study is performed to investigate the performance of the proposed procedure.

Key Words: Optimal Process Mean;Measurement Error;Sequential Inspection;