Mechanical fault diagnosis method and system

Abstract

The invention discloses a mechanical fault diagnosis method and system. The method is as follows: first of all, a diagnosis sample database including all known diagnosis samples at the present is constructed, according to the known diagnosis samples, a plurality of unknown diagnosis samples are constructed for representing known operation states of machinery, then, according to all the known diagnosis samples and the unknown diagnosis samples in the diagnosis database, a fault diagnosis algorithm is trained and generated, and a diagnosis sample representing a current operation state of the machinery, obtained from a field is diagnosed by use of the fault diagnosis algorithm generated through training; and if a diagnosis result is an unknown operation state, by use of such technologies such as expert analysis or onsite analysis and the like, after the operation state of the machinery is determined, the diagnosis sample is updated to a known diagnosis sample, and the fault diagnosis algorithm is re-trained. According to the invention, dynamic improvement of a diagnosis sample database and a fault diagnosis algorithm can be realized, the accuracy of fault diagnosis is improved, the operation quality of machinery equipment is improved, the shutdown time is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of mechanical fault detection, in particular to a mechanical fault diagnosis method and system. Background technique [0002] With the rapid development of modern industry and science and technology, the structure of modern equipment is becoming more and more complex, the functions are becoming more and more perfect, and the degree of automation is getting higher and higher. There is also a close relationship between the equipment, forming a whole in the production process. Therefore, a fault may cause a chain reaction, resulting in the failure of the entire equipment or even the entire production process, so the diagnosis of mechanical faults is of great significance. [0003] Fault diagnosis is an emerging comprehensive interdisciplinary field inspired by medical testing and diagnosis, and developed with the development of modern science and technology such as system engineering, information theory, cybernetics, el...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method and system for diagnosing mechanical faults in view of the technical problems of low recognition accuracy of mechanical faults and imperfect fault samples

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