Papers by Keyword: Expert System

Abstract: In this paper on the basis of fault diagnosis for aviation equipments, an complex behavior of maintenance, IETMs are studied with respect to fault modules, data description and storage, fusion of fault trees and case-based reasoning, as well as integration with external diagnosis and other expert systems, etc., and solutions for fault diagnosis technology of IETMs are investigated to add new contents for fault diagnosis technology, so that IETMs are capable of providing further fault diagnosis strategies to maintenance personnel based on the traditional IETMs.

Abstract: Research on high-density network intrusion features problems, which improves the detection accuracy. For high-density network, an intrusion feature detection system based on intelligent expert systems and neural networks in is proposed. First, use expert systems for known high-density network intrusion detection. Use the neural network expert system to detect those which cannot find the unknown high-density network intrusion. Finally test results using neural network expert system rule library to be updated. Experimental results show that this method can effectively detect high-density network intrusion features, which ensures the security of the network and achieves satisfactory results.

Abstract: The number of offshore wind farms increases gradually because of the high capability of power generation. However, the costs of manufacturing, logistics, installation and maintenance of offshore wind turbine are higher than those of onshore wind turbine. Thus the introduction of fault diagnosis is considered as a suitable way to improve reliability of wind turbine and reduce costs of repairs and casualties. In this paper, 3 major failures of direct-driven wind turbine according to urgency and system responses are discussed. A "memory-like" model pretreatment method and a fault diagnosis method for the failures are investigated. The simulation results show that total amount of fault data to be processed and stored is reduced, and difficulties of knowledge gaining and fault reasoning are also decreased.

Abstract: This paper focuses on the faults of military software system based on component. The faults are caused by external reasons during the using process of the software system. The method for faults diagnosis is based on the theory of expert system. The study finds that, there exist redundant questions during the reasoning process due to the uncertain factors and technical limitations of diagnosis system users. In order to improve the efficiency and reliability of military software fault diagnosis, a hybrid reasoning strategy was proposed. The strategy is based on the serial combination of uncertainty reasoning and interactive reasoning. Experimental result shows that the method based on the hybrid strategy for military software faults diagnosis is more accurate and flexible compared with the traditional reasoning method. The method also has improved the assurance work of military software system.

Abstract: This paper introduces the complexity of fault information and summarizes some main methods in the field of fault diagnosis,including Expert system,Artificial neural network,Fuzzy inference,Rough set theory,Petri network,Bias network,etc.Analyse basic concepts,method principles and their advantages and disadvantages of various methods.Put forward methods of combining multiple methods to synthetically handle the fault information of power network

Abstract: When the human to transmission line repair, many potential risks and fault will cannot be found in time, resulting in not by prior treatment measures to ensure the safety and reliability of the power supply. To realize the state overhaul transmission line, can reduce the blindness of maintenance, improve the transmission line operation stability and save a lot of manpower material resources. Transmission line state repair work there are many difficulties, so in the state overhaul transmission line, on the basis of elaborating the transmission line design condition maintenance expert system, in order to improve the transmission lines the state overhaul of work efficiency.

Abstract: In view of the grass-roots level radar equipment maintenance and testing difficulty is big, the efficiency is low, limited technical conditions, etc, put forward a kind of intelligent fault diagnosis expert system model suitable for the radar equipment, and focus on the basic structure of the model, knowledge acquisition and the relevant reasoning mechanism. According to the characteristics of the grass-roots level radar fault diagnosis, the system combines automatic test technology and expert system and can improve the efficiency and reliability of fault diagnosis.

Abstract: An expert testing system of elevator control cabinet was developed based on LabView, for resolving the difficulties on elevator testing and elevator fault troubleshooting. With fault tree analysis algorithm, manual knowledge obtaining method was used, and forward reasoning strategy was employed for locating the possible reason of the system fault quickly and exactly. The system was modularized to reduce the complexity of the program. The graphical interface was programmed by LabView to improve human-computer interaction ability. The results indicated the expert system can be applied to system fault detection well and improve the efficiency of elevator troubleshooting.

Abstract: The paper designs the urban-rural power grid dispatching fault diagnosis expert system which acquires fault information by SCADA system of automatic system of urban-rural power grid, and uses artificial intellegence method to analyze fault information and make fault diagnosis. The paper implements the core part of the fault expert systemthe design of knowledge base and fault inference engine.

Abstract: At the moment preventive maintenance is the main approach in maintaining power transmitting lines. While along with the improvement of equipment and management, the drawbacks of preventive maintenance appear more and more prominent. In the file the function and the structure of the system of status maintenance for power transmitting lines based on expert system is presented.