DETERMINATION OF MEAN VALUE FOR A PRODUCTION PROCESS WITH MULTIPLE PRODUCTS

摘要

We consider the problem of determining the optimum target value of the process meanfor a production process where multiple products are processed. Every outgoing item is inspected, and each item failing to meet the specification limits is scrapped. Assuming that the quality characteristics of the products are normally distributed with known variances and a common process mean, the common process mean is obtained by maximizing the expected profit which includes selling prices, costs of production and inspection, and losses due to the scraps. A method of finding the optimum common process mean is presented and an illustrative example from electronic device production process is given.