Bayesian Networks In Aircraft Fault Diagnosis And Maintenance Optimization

In high technique war, the key of wartime maintain is time. Itrequests to quickly and in time repair airplanes which will be devotedfight. So the request of the trouble examining and maintaining of airplanebecome more and more high. The research of this thesis is just supportedby the troops "15 national defenses prepare projects-quickly equipmentsbreaksdown examining technique by information fusing",researching aimproved trouble examining and maintaining technique.Now, the international communitys have invested a lot of money inbreakdown examining and a great number of breakdown examining system hadbeen invented. In this thesis, we apply Bayesian network to resolve theairplane breakdown diagnosis and maintaining, improving the maintainingability and examing speed. The works of the thesis mainly include:(1) based on the analysis of the currently main problems of breakdownexamining and maintaining, we research the breakdown examining andmaintaining based on Bayesian network, and analyse and design the Bayesiannetwork breakdown examining system.(2) Currently, the main problem of Bayesian network in breakdownexamining is how to construct the Bayesian network examining model. Thisthesis constructs the power supply car and launched machine Bayesiannetwork model.(3) Usually, the maintaining work is only based on the aircraft crewexperience. It seldom classifies the breakdowns into different classes andfinds the relationship between these breakdowns, ln this thesis, we porposea method to improve the breakdown examining and maintaining technology. Thisapproach classifies these breaddown which former occur and analyses therelationship between those breaddowns, consequently implementingbreaddowns examining and maintaining in turn, reducing the time inbreakdown examining and maintaining.As describing above, In this thesis, we persent a Bayesian networkbreakdown examining system. This system apply the Bayesian network theories to resolve the airplane breakdown examining and maintaining.