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Evaluation of Quality Levels with Multiple Probability Distributions Under the Taguchi's Feedback Control System  

Song, Do-Hyun (국방대학교 운영분석학과)
Lee, Sang-Heon (국방대학교 운영분석학과)
Publication Information
Korean Management Science Review / v.24, no.1, 2007 , pp. 77-90 More about this Journal
Abstract
Taguchi assumed that a product characteristic has the uniform distribution in its preventive maintenance limit when deriving the expected loss generated by the quality deviation. But it is reasonable to assume that a product characteristic has the normal distribution than the uniform distribution. On this paper, we first find the optimum inspection interval and the optimum preventive maintenance limit under the truncated triangular distribution. Secondly we use the beta-general distribution and compare with the truncated triangular distribution. By using the numerical examples, we find the optimum inspection interval and the optimum preventive maintenance limit under their distributions. As a result, we find that the beta-general distribution gives the best solution and easy calculation.
Keywords
Taguchi; Preventive Maintenance; Beta-general Distribution; Feedback Control System;
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