Presents two production models for maintaining current control of an industrial process under the surveillance of an np‐control chart. The first model assumes that the process is not allowed to continue in operation during the search for the assignable cause. The second assumes that the process is allowed to continue in operation during the search for the assignable cause. Develops two simple algorithms, which are implementable in real time on a personal computer, to get the optimum designs of np‐charts. Twenty‐six numerical examples show that the algorithms are very accurate and efficient.
Chung, K. (1992), "An Efficient Procedure for the Economic Design of np‐Control Charts", International Journal of Quality & Reliability Management, Vol. 9 No. 4. https://doi.org/10.1108/02656719210010730
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