基于QAR数据的航空发动机报文解析及监控技术研究

发布时间：2018-05-07 19:25

  本文选题：航空发动机 + QAR数据　； 参考：《中国民航大学》2016年硕士论文

【摘要】：航空发动机监控技术是飞机和发动机正常运行的基础,是航空运营单位保证其正常运营的重要方面,目前国外主流发动机制造商都开发出应用于自身发动机的监控软件,可以对飞机和发动机进行准确、可靠的状态监控和故障诊断。本文研究了航空发发动机监控技术的发展现状,对比了国内外技术的差异,明确了我国监控技术的努力方向和突破重点。重点研究了飞机机载数据采集系统、数据传输系统和地面监控系统,对QAR数据和ACARS报文数据进行研究并进行了同源性分析,为本文的报文解析工作提供了理论基础。本文提出了一种基于QAR数据的报文解析技术,从QAR中按照特定提取逻辑和算法提取满足触发条件的发动机稳态报文数据,通过与厂家原始报文数据进行对比来校验其准确性,利用该种方法可以有效拓宽报文的获取途径,解决ACARS报文获取困难、费用昂贵等问题,为航空公司在无法获取报文时提供应急处置方案,也可以为高校和研究单位提供模拟ACARS报文以进行教学和研究工作。本文同时研究了航空发动机状态参数的基线挖掘,总结了现有基线挖掘的理论和方法,并对标准化模型进行了改进,利用多种方法进行了基线挖掘和拟合并对所提取的基线进行了对比,具有良好的效果。本文通过建立航空发动机状态监控系统,将本文研究的报文解析、基线监控等技术进行融合,实现了QAR数据导入、报文提取、极值监控、基线监控、趋势图绘制、数据存储等功能,可以基本实现对航空发动机的运行状况进行准实时监控及航后分析,有利于及时发现并处理异常情况。
[Abstract]:Aeroengine monitoring technology is the basis of aircraft and engine normal operation, and an important aspect of aviation operation unit to ensure its normal operation. At present, mainstream engine manufacturers abroad have developed monitoring and control software for their own engines. Aircraft and engine can be accurate and reliable state monitoring and fault diagnosis. In this paper, the development status of aero-engine monitoring technology is studied, the differences between domestic and foreign technologies are compared, and the direction of our country's monitoring technology and the key point of breakthrough are defined. The airborne data acquisition system, data transmission system and ground monitoring system are studied in detail. The QAR data and ACARS message data are studied and the homology analysis is carried out, which provides a theoretical basis for the packet analysis in this paper. In this paper, a packet analysis technique based on QAR data is proposed. According to the specific extraction logic and algorithm, the steady-state engine message data that meets the trigger condition is extracted from QAR, and the accuracy is verified by comparing it with the original message data of the manufacturer. By using this method, we can effectively widen the way of obtaining ACARS packets, solve the problems of difficulty in obtaining ACARS packets and high cost, and provide emergency solutions for airlines when they are unable to obtain packets. Simulation ACARS messages can also be provided to universities and research institutions for teaching and research. At the same time, this paper studies the baseline mining of aero-engine state parameters, summarizes the existing theories and methods of baseline mining, and improves the standardized model. Several methods are used to mine the baselines and to combine them to compare the extracted baselines, and the results are satisfactory. In this paper, the aero-engine status monitoring system is established, and the technologies of message analysis and baseline monitoring are combined to realize QAR data import, message extraction, extreme value monitoring, baseline monitoring, trend map drawing, etc. Data storage and other functions can basically realize the quasi-real-time monitoring and post-flight analysis of the aero-engine operating condition, which is helpful to detect and deal with the abnormal situation in time.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V263.6
，

本文编号：1858162