新型民机维修成本目标有效性评估方法

将数据包络分析(DEA)的两阶段法扩展到了输入输出是模糊数的情况,并应用于新型民机的维修成本目标评估之中。应用时,新机与其类似机型将来的维修任务被视作决策单元,直接人工时费、直接材料费和间接维修费被视作模糊输入,遣派可靠度、可用座公里数和损失成本的倒数被视作模糊输出,经两个阶段的DEA分析之后,不仅能实现对维修成本目标的有效性评价,而且能实现对不合理目标的及时修正。经实际工程验证,该方法实用且有效。

Evaluation Method for Maintenance Cost Target of New Civil Aircraft

A two-stage data envelopment analysis(DEA) approach with fuzzy inputs and fuzzy outputs is studied,and an application for the maintenance cost target estimation of the new civil aircraft is also presented.In the application,the future maintenance of the new aircraft and some similar aircrafts is regarded as decision-making units.Direct manhour costs and material costs,and indirect maintenance costs are regarded as fuzzy inputs.And the dispatch reliability,available seat miles and reciprocal loss costs are regarded as fuzzy outputs.By the two-stage data envelopment analysis,the efficient target of the maintenance cost can be estimated and the inefficient one can be revised.Experimental results show that the method is reasonable and effective.