面向任务保障的多组件系统效益优化策略

Yield Optimization Strategy of Multi-Component Systems for Mission Guarantee

为了保障系统在执行任务期间高可靠、高效益的运行,从系统效益的角度出发,构建了系统可靠性模型,采用边际效应思想构建了效益重要度,提出了一种面向任务保障的多组件系统效益优化策略。当系统可靠度下降到设定阈值时,计算系统各组件的效益重要度,选择效益重要度最大的组件进行备件分配,如此进行迭代,直到完成任务保障,形成最优的备件分配序列。通过该策略实现了以运行效益最优为目标,以系统可靠度和任务保障时长为约束的备件分配序列。最后,通过数值仿真验证了该策略的可行性。

In order to guarantee the system to run high reliability and yield during the execution of the mission,a system reliability model is constructed from the perspective of system yield,and the yield importance is defined by using the idea of marginal utility.A yield optimization strategy of multi-component systems for mission guarantee is proposed.When the system reliability drops to a preset threshold,we calculate the yield importance of each component,select the component with the highest yield importance to allocate the spare,and then iterate until the mission guarantee is completed to form an optimal sequence of spare allocation.Through proposed strategy,the sequence of spares is allocated with the objective of optimal operation yield and the constraints of system reliability and mission guarantee time.Finally,a number example is presented to verify the feasibility of the proposed method.