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Research on CBR and Multi-Agent Based Distributed Fault Diagnosis System

Author: LiuJinGen
Tutor: ZuoHongFu
School: Nanjing University of Aeronautics and Astronautics
Course: Computer Software and Theory
Keywords: Troubleshooting CBR MAS Cooperation JADE
CLC: TP277
Type: Master's thesis
Year: 2006
Downloads: 327
Quote: 4
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Abstract


Modern fault diagnosis system is a dynamic, distributed, flexible and uncertain complex systems . Multi-Agent able to take advantage of parallel distributed processing technology and modular design concept , the complex system into relatively independent Agent subsystem , through cooperation and competition between the Agent to complete the diagnosis of complex problem solving . Taking into account some of the fault diagnosis field has accumulated a wealth of diagnostic cases , so this article will be case-based reasoning (Case Based Reasoning, referred CBR) combined with multi- Agent technology research, and applied to a distributed fault diagnosis system . First, the introduction of a distributed fault diagnosis system status , an overview of modern diagnostic methods of artificial intelligence principles outlined CBR method , Agent technology and Multi-Agent Systems , and as a basis to establish a Multi-Agent Based Distributed CBR and failure diagnostic system structure model . Secondly , a detailed analysis of the structural model of each functional Agent; research program based on a multi CBR Agent vote collaborative diagnosis mechanism ; studied Multi-Agent Distributed fault diagnosis system of three distributed trust management method: Based on Digital Signature mutual authentication of the identity of the Agent , Agent -based access control table control access to system resources and role-based authorization to access ; introduced the structural model case retrieval Agent security protection methods. Again, the structural model used in civil aircraft fault diagnosis system, studied civil aircraft fault diagnosis system key techniques to realize CBR : the gray theory is applied to calculate the similarity fault cases , using a case based on differential drive rewrite method . Finally, in the JADE platform to achieve a contract in nets distributed collaboration multiple CBR Agent diagnosis, completed the development of civil aircraft fault diagnosis system , CBR inference methods and the use of Agent technology combined so that the system has the collective intelligence , better robustness and fault tolerance.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Monitoring, alarm,fault diagnosis system
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