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Economic design of (X)over-bar control charts for monitoring batch manufacturing processes

机译:经济的(X)跨栏控制图设计,可监控批量生产过程

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The issue of economic design of an (X) over bar control chart is addressed for a batch manufacturing process, subject to Markovian failure characteristics. The objective of this design is to minimise the expected total quality cost per batch. To find the optimal sample size and control limits, a Markov chain model is formulated. There is no analytical solution to the optimisation problem, so to avoid an exhaustive search, a heuristic approach, based on a regression model with the Cobb-Douglas function, is proposed. The impact of the model parameters and their interactions on the optimal solution is explored by conducting analysis of variance on 6561 numerical examples in a factorial design. Finally, an example of a real application demonstrates the effectiveness of the proposed model and heuristic.
机译:条形控制图(X)的经济设计问题已针对批生产过程解决,该过程受Markovian破坏特征的影响。此设计的目的是使每批次的预期总质量成本最小化。为了找到最佳的样本量和控制限,制定了马尔可夫链模型。没有针对优化问题的解析解决方案,因此为了避免穷举搜索,提出了一种基于具有Cobb-Douglas函数的回归模型的启发式方法。通过对析因设计中的6561个数值示例进行方差分析,探索了模型参数及其相互作用对最优解的影响。最后,一个实际应用的例子演示了所提出的模型和启发式方法的有效性。

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