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Rapid failure diagnosis reasoning machine

A fault diagnosis and fast technology, applied in the direction of reasoning methods, can solve problems such as high time overhead and affecting reasoning speed

Inactive Publication Date: 2009-03-18
李清东
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  • Abstract
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AI Technical Summary

Problems solved by technology

Common inference engines take a lot of time in the process of reading database rules one by one and string comparison and matching operations, which affects the inference speed

Method used

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Experimental program
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Embodiment Construction

[0034] figure 1 :

[0035] Under the C++Builder programming environment, the present invention is programmed and implemented, and the relationship between the main functional components of the reasoning machine is as follows: figure 1 As shown: 1 is the data interface between the fault diagnosis reasoning machine and the outside, which is used to read the data detected by the fault test. The data has been processed into a state quantity indicating whether the fault symptom exists; The transmitted data is expressed in the form of a bit vector; 2 is the rule knowledge base stored and managed in the information storage unit, and the rules required for fault diagnosis are saved in the form of a database; 4 is the rule loading module, before the fault diagnosis starts, 4 is stored Execute, save the rules in 2 in the memory in the form of bit vectors, when saving the rules, 4 will sort the rules according to the importance of the rules; 5 is the core module of the inference e...

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Abstract

The invention relates to a fault diagnosis inference engine, which shows premonition information obtained by fault detection through bit vectors, shows all regulations needed by the fault diagnosis through the bit vectors with identical length, and realizes the fast fault diagnosis according a bit vector logical operation. The regulations which are showed in terms of bit vectors and are loaded in a computer memory can accept the space of the memory, thereby avoiding repeatedly rereading a database of the regulations during the inference procedure, reducing of the cost of the used time of the regulations, and increasing the inference speed. The computer is fast in processing the logical operation of the bit vectors, and enables the regulation matching processing speed of the inference engine to increase further. The system can perform fast fault diagnosis inference under the conditions that the test system is huge in regulation knowledge base and great in detection information quantity. The invention has been applied in the development of a fault diagnosis expert system of a certain type carrier rocket.

Description

technical field [0001] The inference engine is the main component of the expert system. The fault diagnosis inference engine can use rules and fault symptoms to perform inference operations according to the detected fault symptoms, and finally obtain the fault represented by the fault symptoms. When the amount of detection information is large, the update speed of information is fast, and the fault diagnosis needs to be completed in a short time, the reasoning method of repeatedly reading the rules in the database is slow, which increases the running time of the entire diagnostic system. [0002] The purpose of the invention is to realize rapid reasoning of fault diagnosis. Background technique [0003] In aviation, aerospace, nuclear industry and other fields, the system has a huge composition, complex structure, high reliability requirements, and requires the system to have real-time fault detection and diagnosis capabilities. Therefore, when designing the fault diagnosis...

Claims

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Application Information

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IPC IPC(8): G06N5/04
Inventor 李清东
Owner 李清东
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