基于任务可用度模型的指数分布型备件随舰携行量计算模型

Ship spare parts calculation model based on mission availability and exponential distribution

针对现有的战备完好性计算模型与备件数量关联度不强的问题和基于战备完好性的备件数量计算大多采用仿真方法的不足,提出了能够考虑备件数量影响的舰船装备任务可用度的概念及其计算模型,并在此基础上研究了寿命服从指数分布的备件在故障后采用更换策略时,装备的任务可用度与备件携行量的关系,得到了一个可以通过解析计算确定备件数量的新模型。算例计算及与仿真结果的对比证明了该模型的正确性与有效性。

As the association between quantity of spare paLts and quantity of spare parts based on material readiness is often calculated through simulation. According to the conception of mission availability of ship equipment and its calculation mode used for spare parts calculation, the relationship between the quantity of spare parts and mission availability was studied as to the life of spares subject to exponential distribution and the replacing strategy. And a new analytic spare parts calculation model was proposed. By comparing the calculation results with the simulation results, the model was proved to be correct and efficient.