考虑多阶段任务的舰船任务可靠性分配方法

Reliability allocation method of ship multistage mission

针对传统任务可靠性分配方法没有考虑不同任务阶段下系统可靠性框图可能不同的问题,引入多阶段任务系统理论,提出了一种考虑多阶段的舰船任务可靠性分配方法,结合不同阶段下不同的舰船任务可靠性框图,进行指标分配,并编写Matlab程序对分配结果进行迭代修正。实例验证结果表明:该方法考虑了多阶段任务特性,能够充分体现不同组成单元任务可靠性的差异,为任务可靠性指标的合理分配提供了参考依据。

As the traditional mission reliability allocation method does not refer to the problem that the reliability block diagram of the system may be different in the different stages of mission, this paper has introduced the theory of multistage mission system and proposed a ship mission reliability allocation method for multistage mission. According to the different-stage mission reliability block diagram, the index distribution needs to be made and then Matlah program is used to correct the results of distribution. Finally, an example has been given. The result shows that the method can meet the requirements of multistage mission and fully display the differences in mission reliability of the diffe- rent component units, which provides a reference for the reasonable distribution mission reliability index.