Research On Visual Method Of Maintenance And Support Processes Of Civil Aircraft

In recent years, all kinds of high-tech develop and widely used in civil aircraft design, which make the structure of civil aircraft become increasingly large and more complex, the degree of informationization enhances unceasingly, the difficulty of maintenance support increases. This applies not only put forward higher requirement to maintenance the level of maintenance staff, more important is to put forward a new kind of maintenance support mode to adapt the maintenance support requirement under the condition of informationization, otherwise it will affect the safe operation and efficient operation of civil aircraft. Based on the civil aircraft maintenance and support on the specific process, this paper proposes the study to civil aircraft maintenance support process of fuzzy Petri net; time Petri nets, colored time Petri net and fuzzy time colored Petri net modeling and simulation, Modeling and simulating maintenance support process and its multi-resource factors visually. Taking fault detection, fault diagnosis, maintenance and a series of process fully and truly simulated, which can provide good support to determine the efficiency evaluation for maintenance support process and the weak link of civil aircraft.The first chapter introduces research background and summarizes the research progress and status quo of visualization methods of maintenance support process; the second chapter introduces the principle of visualization of maintenance support of civil aircraft. The third chapter puts forward the fuzzy Petri net of civil aircraft maintenance support process simulation model based on fuzzy Petri net, using the fuzzy production rules to express the reality of some uncertainty relation; In addition putting forward the research of maintenance support process simulation model of civil aircraft based on time Petri net, considering the time and condition factor of maintenance support process of civil aircraft. The fourth chapter puts forward the research of maintenance support process simulation model of civil aircraft based on colored time Petri net, it adds resource factors based on time Petri net, resource factors can be divided into people and all kinds of repair tools generally, it makes up the disadvantage that in time Petri net, the resource factors are too general. In addition putting forward the research of maintenance support process simulation model of civil aircraft based on fuzzy time colored Petri net, fuzzy time colored Petri net save the resource factors of colored Petri net; in addition, it transforms the time point to fuzzy time section. The fifth chapter is the expansion, which makes specific and quantitative analysis for the fault diagnosis of actual maintenance support process, puting forward the research of Bayesian network fault diagnosis of maintenance support process, this method can well reflect the fault components or subsystems influence on the failure of the entire system and the component or subsystem dependencies between the degree of dependence; which can help to find out the weak links of the system and the ways to improve the reliability of system.