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针对作战编队自主保障期间,作战单元对装备故障仅具备换件修理、保障单元对备件修复概率小于1的保障特点,扩展备件管理多级(METRIC)模型,建立了装备冗余和外场更换件(Line Replaceable Unit,LRU)冗余结构下非串件策略和串件策略两级单层备件库存保障模型。以备件贮存空间为约束,可用度为目标,对非串件策略系统建立有限解空间下的分层边际优化模型。依据备件保障流程,基于蒙特卡罗仿真方法建立了两级维修保障仿真模型。实例分析结果表明:当系统可用度较低,采用串件策略能极大提高系统可用度;仿真结果与解析结果一致,本文建模方法正确。模型可为保障决策者制定编队随行备件方案提供参考。
In the light of the independent protection of combat formation, combat units only have replacement parts repaired for equipment faults, and the protection unit has the safeguard feature that the probability of repair of spare parts is less than 1. Expanding the METRIC model of spare parts management sets up equipment redundancy and field replacement parts Line Replaceable Unit (LRU) Two-level single-layer spare parts inventory support model for non-serial item strategy and serial item strategy under redundant structure. Taking the storage space of spare parts as constraint and availability as objective, a stratified marginal optimization model under finite-solution space is established for non-serial-item strategy system. Based on the spare parts support process, a two-level maintenance support simulation model was established based on the Monte Carlo simulation method. The results of the example analysis show that when the system availability is low, the system availability can be greatly improved by adopting the serial-part strategy. The simulation results are consistent with the analytical results and the modeling method in this paper is correct. The model can provide a reference for decision makers to formulate the accompanying spare parts plan.