Study Of Fault Diagnosis Expert System For Reclaimer

Fault diagnosis needs large quantity of experts'professional knowledge and engineers'experience. So, people usually use Expert System to achieve. There are many methods for fault analysis; Fault Tree Analysis (FTA) is among those who are simple and efficient. The dissertation analyzes the concept and theory of expert system, fault analysis and fault tree analysis method, therefore asserts the designing procedure and the software designing blue print.Fault tree analysis is a method of graphics. Analyze all kinds of factor probably causing the system fault, including hardware, software and human. Then we can draw the logical graph (fault tree), and gradually analyzes the fault factor from top to bottom in branches. The objective is to ascertain the basic fault, the causation, the influence and accruing probability.The fault tree analysis in fault diagnosis applications was discussed. Given the establishment of the fault tree and fault tree model in fault diagnosis expert system inference strategy. Finally, based on the failure mode characteristics, completed the fault tree of the reclaimer.Using rule-based knowledge representation, rule-based knowledge representation that has been studied in-depth. Given the method of the rule-based knowledge database design, illustrated the expert knowledge organization in the database of the expert system.Given the design method of inference engine based on the blackboard model. Described the structure and solve process of expert system based on the blackboard model.Finally, the forward reasoning was applied to the inference engine machine based on blackboard model, achieved the inference engine design flow chart of fault diagnosis expert system for reclaimer. Based on the analyzing of the corresponding theory to be needed and the user's requirement, the dissertation asserts the software frame of the expert system. There are data collection module, knowledge database management module, inference and diagnosis module, explanation facility module. The result showed that the fault diagnosis expert system can provide effective help for the reclaimer maintenance.