Remote fault diagnosis system and method based on expert system

Abstract

The invention discloses a remote fault diagnosis system based on an expert system. The remote fault diagnosis system comprises a gateway and server part and the expert system part. The expert system is the core of the remote fault diagnosis system and comprises a network interface, a man-machine interface, a knowledge base, a database, an explanation machine and an inference machine, wherein the network interface receives and converts data transmitted by a server, the man-machine interface is used for conducting information interaction between a user and various modules of the expert system, the knowledge base is connected with the inference machine, the explanation machine and the like and used for storing facts and rules, the database is connected with the explanation machine, the inference machine and the interface and used for storing the inference procedure, information records and the like, the explanation machine explains the faults through the method shown through the inferencepath based on rule inference, and the inference machine diagnoses the faults through inference due to fusion of two mechanisms including the neural network and the rule-based inference.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of a hydraulic test bench, and relates to a remote fault diagnosis system and method based on an expert system. Background technique [0002] With the rapid development of science and technology, my country's national defense force is becoming stronger and stronger, and the application technology of hydraulic pressure in military industry is also becoming more and more mature. The hydraulic system is the power source of many equipments, and the reliability and safety of the system operation affect the working performance of the equipment to varying degrees. As a key testing equipment, the hydraulic test bench is widely used in aviation, aerospace, shipbuilding and military industries, and its performance directly affects the evaluation of the performance of the tested object. The essence of the hydraulic test bench is also a hydraulic system. my country's hydraulic test bench testing tech...

AI Technical Summary

Problems solved by technology

[0003] Due to the complex structure and various influencing factors of the hydraulic test bench, and the fault characteristics are transitive and open, the fault mechanism is difficult to accurately judge, resulting in difficult fault diagnosis and long maintenance cycle

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