二维产品二维成组更换间隔期优化研究

An Optimization Research on Preventive Maintenance Interval of Two-Dimensional Product

摘要:

对于故障受日历时间与使用时间共同影响的二维产品,传统的只按照单一时间变量开展的预防性维修已不能满足二维产品的实际维修保障需求,鉴于此,针对二维产品的特点,提出了二维预防性维修的策略,以日历时间与使用时间对二维产品进行二维预防性维修决策；首先建立了二维产品故障率函数表达式,然后对二维成组更换的过程进行具体的分析,在有限使用条件下分别从经济性的角度与任务性的角度建立二维成组更换的费用模型与可用度模型；根据所建模型,结合实例,采用了费效分析中的费效比准则来优化二维成组更换间隔期,通过对比分析验证了该模型的适用性与有效性,证明了二维成组更换策略要优于传统的成组更换策略,最后对二维预防性维修提出了展望。

Abstract:

For the failures of two-dimensional product affected by the calendar time and usage time, traditional one-dimensional preventive maintenance can’t meet the actual maintenance demand of two-dimensional product, therefore, according to the features of two-dimensional product, preventive maintenance strategy for two-dimensional product is proposed, this paper makes decision for two-dimensional product through calendar time and usage time. First we establish failure rate function expression of two-dimensional product and analyze the process of two-dimensional preventive maintenance in detail, after propose a cost model and availability model from the view of economy and mission in finite span. According to the cost and availability model, through examples, we derive the optimal two-dimensional age-replacement interval by cost-effectiveness analysis, and verify the model’s the applicability and the validity through contrast and analysis, verify that two-dimensional block-replacement strategy is better than traditional block-replacement strategy,the last we give a brief discussion of future research area about two-dimensional maintenance.