Research On Knowledge Engineering Of Fault Diagnostic System For 12V190B Diesel Engine

《The system of monitoring performance and fault diagnosis for 12V190B diesel engine 》 is an actual project that The engineering centre of Northestem university equipmemt diagnosis and The equipment repair depot of Liaohe oil field unite to develop for the actual requirement of Z12V190B diesel engine's condition monitoring and fault diagnosis. The researching subject of the thesis-《The knowledge engineering research of fault diagnosis system for Z12V190B diesel engine》 is an important basis concept of the project..The thesis first detailedly researches and discusses the constitution and priciple as well as application in fault diagnosis field of knowledge engineering that is an intelligent science field and analyzes characteristic of neural networks and expert system in knowledge engineering research. For application of expert system in fault diagnosis for diesel engine, the thesis systematically analyzes and researches principle ,methods and process of fault tree analysis. The thesis simply discusses self-learning function of knowledge engineering and illuminates important position and effects of knowledge engineering in fault diagnosis and indicates development direction and trend of knowledge engineering in future application of fault diagnosis.The thesis systematically analyzes and researches constitution and working principle of Z12V190B diesel engine and makes classification of function gradation and establises classifing model function gradation of the type of diesel engineering. The thesis establishes structural frame of knowledge engineering of Z12V190B diesel engine from the angle of knowledge engineering ; associating the application of knowledge engineering of expert system and neural networks in fault diagnosis for diesel engine,illuminates characteristic method of aquiring knowledge and expressing knowledge and puts forward methods and steps of establishing knowledge base of expert system and samples of neural networks of Z12V190B diesel engine.Following an example of burning-oil system of diesel engine and on the base of...