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An Analytical Approach to Derive the Quality Loss Function with Multi-characteristics by Taguchi's Quality Loss Concept

다구찌 품질손실개념에 의한 다특성치 품질손실함수 도출의 분석적 접근방법

  • Pai, Hoo Seok (Division of Shipping Management, Korea Maritime and Ocean University) ;
  • Lim, Chae Kwan (Department of Distribution Management, Tongmyong University)
  • 배후석 (한국해양대학교 해운경영학부) ;
  • 임채관 (동명대학교 유통경영학과)
  • Received : 2020.10.07
  • Accepted : 2020.12.08
  • Published : 2020.12.31

Abstract

Purpose: The main theme of this study is to derive a specific quality loss function with multiple characteristics according to the same analytical structure as the single characteristic quality loss function of Taguchi. In other words, it presents an analytical framework for measuring quality costs that can be controlled in practice. Methods: This study followed the analytical methodology through geometric, linear algebraic, and statistical approaches Results: The function suggested by this study is as follows; $$L(x_1,x_2,{\cdots},x_t)={\sum\limits_{i=1}^{t}}k_i\{x_i+{\sum\limits_{j=1}^{t}}\({\rho}_{ij}{\frac{d_i}{d_j}}\)x_j\}x_i$$ Conclusion: This paper derived the quality loss function with multiple quality characteristics to expand the usefulness of the Taguchi quality loss function. The function derived in this paper would be more meaningful to estimate quality costs under the practical situation and general structure with multiple quality characteristics than the function by linear algebraic approach in response surface analysis.

Keywords

Acknowledgement

이 논문은 2018년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 연구되었음[2018S1A5B5A07071664]

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