Petri网作用下航空装备虚拟维修训练仿真  

Virtual Maintenance Training Simulation of Aviation Equipment under Petri network

作　　者：张原 李璇 ZHANG Yuan;LI Xuan(College of Basic Sciences for Aviation,Naval Aviation University,Yantai Shandong 264001,China)

机构地区：[1]海军航空大学航空基础学院,山东烟台264001

出　　处：《计算机仿真》2023年第4期52-56,共5页Computer Simulation

摘　　要：针对航空装备日常维修训练周期长、费用高等难题,建立基于Petri网的航空装备虚拟维修训练仿真模型。分析维修训练的组成要素,利用分层思想将训练任务划分为维修层、作业层、维修动素和基本姿势层等,确定不同阶段的训练任务;选取串行、并行和选择作业三种模式,分析不同模式的训练过程;通过基网、权函数、维修动作和状态集合等元素,构建Petri网子模型;采用有向图表示装备部件维修间的约束关系,明确维修优先级,并将有向图变换为仿真模型可识别的邻接矩阵;建立具有动态重组功能的Petri网训练仿真模型,设置触发条件,获取维修训练仿真的完整过程。实验结果表明,上述模型即使在维修训练任务非常多的情况下也不会出现死锁现象,且仿真效率高,能有效减少训练时间和成本。Aiming at the problems of long period and high cost of daily maintenance of aviation equipment,this paper designed a model of simulating virtual maintenance training of aviation equipment based on Petri net.Firstly,the components of maintenance training were analyzed.And then,the training tasks were divided into maintenance layer,operation layer,maintenance therblig and basic posture layer through the hierarchical idea,so that the training tasks in different stages can be determined.Three modes,the serial,parallel and selective operations were selected.After that,the training process of different modes were analyzed.The sub model of Petri net was constructed through the base nets,weight functions,maintenance therbligs and state sets.Moreover,the directed graph was used to represent the constraint relationship between equipment components,and thus to define the maintenance priority.Furthermore,the directed graph was transformed into an adjacency matrix that can be recognized by the simulation model.Meanwhile,a Petri net training simulation model with dynamic reconfiguration function was constructed.Finally,trigger conditions were set.Thus,the complete process of maintenance training simulation was obtained.The experimental results show that the deadlock will not exist even when there are many maintenance training tasks,and the simulation efficiency of the model is high,which can effectively reduce the training time and cost.

关 键 词：派催网 航空装备 虚拟维修训练 仿真模型 有向图 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]