座舱温度异常事故模拟仿真研究

发布时间：2018-11-08 07:48

【摘要】：客舱环境控制系统适航能力是衡量民航客机无故障运营的重要方面,民航事业发展的枢纽。这就需要详细的对国外客舱环境的适航性进行研究,以为我国提出具有更高水平的适航标准提供依据。座舱环境控制系统十分复杂,环境参数较多,所以本文以影响乘客和机组人员的热环境参数的座舱温度为研究对象,研究了环控系统中发生的温度异常事故/事件。本文首先回顾了近30年来与座舱环境控制系统相关的座舱异常事故/事件,从事故/事件的指标和机理方面进行统计分析,了解环控系统的整体安全状况,表明座舱温度是影响座舱空气质量的重要参数之一;然后对FAA适航条款g831.25)(关于座舱温度方面安全性规定作一解析。根据能量守恒,在MATLAB仿真环境下建立座舱温度控制系统仿真模型,对仿真结果进行动态分析,同AMESim仿真结果对比,表明本文所建立的环控系统温控模型能够较好地反映座舱内实际温度参数变化,并设计了手动故障注入界面;在此基础上,用蒙特卡洛方法建立座舱温度控制系统随机故障仿真模型,研究随机故障对座舱的影响。对结果进行整理,分析仿真结果表明座舱温度异常事故率处于g25.831 CCAR)(标准范围之内。最后,对研究成果做了进一步的总结,为以后环控系统设计以及相关标准的制定提供参考。经过上述研究得出:通过系统仿真的方法搭建随机故障生成模型,对事故进行模拟仿真,进而对相关条款进行验证分析的方法是可行的。本文的研究为适航体系的建设提供的相关的理论依据及技术支持;为安全性评估验证工作建立了一种可行方式。
[Abstract]:The airworthiness of cabin environment control system is an important aspect to measure the faultless operation of civil aviation passenger aircraft and the hub of the development of civil aviation. It is necessary to study the seaworthiness of foreign cabin environment in detail to provide the basis for our country to put forward a higher standard of airworthiness. The cabin environment control system is very complex and the environment parameters are many. Therefore, the cabin temperature which affects the thermal environment parameters of passengers and crew is taken as the research object, and the abnormal temperature accidents / events in the environment control system are studied. In this paper, we first review the abnormal accidents / events related to the cockpit environment control system in the past 30 years, and make statistical analysis on the indexes and mechanism of the accidents / events, and understand the overall safety situation of the environmental control system. It is shown that cabin temperature is one of the important parameters affecting cabin air quality. Then the FAA airworthiness clause g 831.25) (on cabin temperature safety provisions for an analysis. According to the conservation of energy, the simulation model of cabin temperature control system is established under the environment of MATLAB, and the simulation results are analyzed dynamically, and compared with the results of AMESim simulation. The results show that the temperature control model established in this paper can better reflect the change of actual temperature parameters in the cockpit, and the manual fault injection interface is designed. On this basis, the simulation model of random fault of cabin temperature control system is established by Monte Carlo method, and the influence of random fault on cockpit is studied. The simulation results show that the abnormal accident rate of cabin temperature is within the range of g25.831 CCAR) (standard. Finally, the research results are further summarized, which provides a reference for the future design of environmental control system and the formulation of related standards. Through the above research, it is concluded that it is feasible to build a random fault generation model by the method of system simulation, to simulate the accident, and then to verify and analyze the relevant articles. The research in this paper provides relevant theoretical basis and technical support for the construction of airworthiness system, and establishes a feasible way for safety evaluation and verification.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V245.3;TP391.9

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