基于EATI的维修排故过程建模与仿真方法研究

发布时间：2018-12-17 13:34

【摘要】：航线排故工作的效率是影响飞机安全和运行的关键因素。因此,从维修培训的角度出发,构建虚拟维修训练系统,提高机务人员的排故效率具有十分重要的意义。优秀的维修排故过程模型更有利于仿真系统开发的顺利进行,且能提高培训效率。分析现有多种排故过程模型可知,大多存在建模过程复杂,理解困难,重用性与扩展性差,更不能实时描述排故过程中复杂的行为交互关系等缺点。针对以上问题,也为了更好的对维修排故过程进行描述,本文在总结和借鉴现有模型的基础上,以航线维修排故过程为研究对象,重点研究了基于EATI的维修排故过程建模方法。为了验证模型的可行性及优点,对虚拟维修训练系统进行了仿真研究。主要做了以下工作:首先,了解了飞机航线故障知识并结合具体排故实例对航线排故过程进行了分析。为了使建模过程更有目的性,对系统仿真要素、仿真流程、仿真需求以及建模过程中需要解决的关键问题进行研究。通过比较多种过程建模方法的优缺点及适应范围,指出了EATI方法的优点。同时为了更好的描述维修实体间的关系,对EATI方法进行改进,引入了关系(R)元素。然后,以EATI建模方法为指导结合UML建模语言,应用类图、活动图、序列图对排故过程中的实体、动作、任务、交互四个元素分别建模,以任务为中心建立了具有可重用性及可扩展性的EATI模板。结合维修任务的划分方法,按照EATI模板建立排故过程的元模型,又根据维修任务的逻辑层次关系以及模型融合的概念给出了建立具体排故任务过程模型的方法。最后,对航线虚拟维修训练系统的仿真方法进行研究并结合具体实例在所建平台上验证了建立的基于EATI的航线维修排故过程模型的可行性及优点。
[Abstract]:The efficiency of route handling is a key factor affecting the safety and operation of aircraft. Therefore, from the point of view of maintenance training, it is of great significance to construct a virtual maintenance training system to improve the troubleshooting efficiency of crew. Excellent maintenance and troubleshooting process model is more conducive to the smooth development of simulation system, and can improve the efficiency of training. It is found that most of the existing models are complex, difficult to understand, poor in reusability and extensibility, and unable to describe the complex interaction of behavior in the process of troubleshooting in real time. In view of the above problems, and in order to better describe the maintenance and troubleshooting process, based on the summary and reference of the existing models, this paper focuses on the modeling method of maintenance troubleshooting process based on EATI, taking the course of route maintenance and troubleshooting as the research object. In order to verify the feasibility and advantages of the model, the virtual maintenance training system is simulated. The main work is as follows: firstly, we understand the fault knowledge of aircraft route and analyze the process of route failure with specific examples. In order to make the modeling process more purposeful, the system simulation elements, simulation flow, simulation requirements and the key problems to be solved in the modeling process are studied. The advantages and disadvantages of EATI method are pointed out by comparing the advantages and disadvantages of many process modeling methods. At the same time, in order to better describe the relationship between maintenance entities, the EATI method is improved and the relational (R) element is introduced. Then, under the guidance of EATI modeling method combined with UML modeling language, applying class diagram, activity diagram and sequence diagram to model the entities, actions, tasks and interactions in the process of troubleshooting. A EATI template with reusability and extensibility is built around the task. Combined with the partition method of maintenance task, the meta-model of troubleshooting process is established according to EATI template, and the method of establishing concrete troubleshooting task process model is given according to the logical hierarchy relation of maintenance task and the concept of model fusion. Finally, the simulation method of route virtual maintenance training system is studied, and the feasibility and advantages of the model based on EATI are verified on the platform.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：V267;TP391.9

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