Abstract
In order to solve the complexity and difficulty of detection and analysis for vehicle faults, a vehicle fault diagnosis expert system based on fault tree analysis method was designed. On the basis of analyzing the reasons of vehicle malfunction and basic measures of fault diagnosis, the composition and structure of diagnosis expert system were brought out. The methods of knowledge acquisition, knowledge representation and reasoning mechanism were studied emphatically. Making the fault diagnosis of vehicle brake lights as an example, the expert system was implemented. The practical operation showed that the reasoning result corresponded to the actual situation, diagnosis result was correct, and the expected effect was achieved. The designed expert system can effectively diagnose vehicle breakdowns and help users to exclude faults and maintain vehicles.
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