X-bar Control Chart Based on the Cost Evaluation
نویسنده
چکیده
In 1956, Duncan first presented the economic design of x control chart and formulated its parameters based on minimizing the process control cost. In this paper, we further propose the modified Duncan’s model with the run-test rule and asymmetric control limits for determining the optimum control parameters. By comparing our solutions with Duncan’s results, it shows that the former usually have the smaller expected cost per hour than those of the latter.
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