Robust Economic-Statistical Design of Control Charts - A Case Study in Automotive Industry

Document Type : Research Paper

Authors

1 Dept. of Industrial Engineering, Babol University of Technology, Babol, I.R.

2 Dept. of Industrial Engineering, Tarbiat Modares University, I.R. Iran

Abstract

     One of the most important problems of the designs proposed by traditional economic-statistical approaches of control charts is inefficiency in the face of uncertainty. Uncertainty in the parameters of economic-statistical models may lead to failure in rapidly detecting changes in processes and impose greater costs to the organization. Monitoring the machining process in an automotive industry explains the necessity of considering the robust approach to the control charts. This research intends the control charts design for monitoring process quality characteristics in conditions of uncertainty in cost and process parameters. The robust design ensures that the proposed control chart alarms the process changes earlier than the time set by the user, despite the uncertainty in model parameters. The resulted robust optimal solutions not only ensure the efficiency of solutions in any realization of parameters, but also facilitate the practical implementation of control charts and reduce organization costs through improving the quality of process outgoings.

Keywords

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Advances in Industrial Engineering
Volume 48, Issue 2 - Serial Number 2
October 2014
Pages 229-241

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