关键词: 联合经济设计模型, 样本容量和抽样区间均可变, 指数加权移动平均均值控制图, 预防维修, 最小维修, 正交试验设计, 回归分析方法

Abstract: For a repairable system whose abnormality can cause process mean shifting,an integrating decision method of Variable Sampling Size and Sampling Interval Exponentially Weighted Moving Average (VSSI EWMA) mean chart and planned maintenance with minimal repair into consideration was proposed.In the approach,three renew seniors were determined with the assumption of minimum repair for false alert and perfect repair for corrective alert and planned maintenance.On this basis,a joint economic design model for VSSI EWMA mean chart and planned maintenance was proposed by using imperialist competitive algorithm.The results of the example analysis showed that the model could further reduce the overall cost of system by further optimizing the decision parameters cause of considering the minimal maintenance and coupling relationship between control charts and planned maintenance.A sensitivity of the model was analyzed by using the orthogonal experiment design and regression analysis method.

Key words: joint economic design model, variable sampling size and sampling interval, exponentially weighted moving average mean chart, planned maintenance, minimum repair