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The Implementation of the Fault Diagnosis Expert System in Hydraulic AGC System

Wang Yiqun et al.  
For the hydraulic automatic gauge control (HAGC)system of the strip rolling mill, the framework of fault detecting and diagnosis (FDD)expert system is set up based on the ultimate of expert system, compound with the classical method of signal processing, fuzzy theory and neural networks theory. Where,using a neural network to train the fuzzy reasoning model,then making use of this model to diagnose the faults of the system, the real time fault diagnosing for the system can be realized, the diagnosing precision can be enhanced, and the new information for the expert system can be renewed. A set of FDD software for the hydraulic automatic gauge control (AGC)is developed. The approach is approved in effect via the experiment.
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