基于层次Petri网的复杂装备保障流程分析方法

Analysis Method of Complex Equipment Support Process Based onHierarchical Petri Net

摘要:

针对复杂装备保障流程约束条件多、动态性强、耦合严重、层次结构复杂的特点,提出了一种基于层次Petri网的流程分析方法；首先,分析了保障流程的层次化结构,采用着色时间约束Petri网,建立了包含保障人员、保障设备、保障空间等保障资源库所的层次化Petri网流程模型；然后,采用流程基本模型起始时间——流程子网起始时间——流程总时间的层次方法,设计了流程时间参数统计算法；最后,以某复杂装备系统保障流程为例,进行了实例分析,并通过与ExSpect软件Monte Carlo仿真对比验证了算法的有效性。

Abstract:

For the characteristics of strong dynamic, severe coupling and multi-process constraints of the complex equipment support, this paper established a hierarchical flow analysis model based on Petri net. First, the hierarchical structure was analyzed:the coloring time constraints Petri net was used to build the hierarchical flow model containing the support resources such as the support personnel, the support equipments and the support space. Then, the statistics algorithm of the time parameters of the flow was introduced via the hierarchical analysis method. Lastly, an example was taken in a support process of certain equipment system. By contrast with the results of ExSpect software and Monte Carlo simulation, the effectiveness of the algorithm was verified.