Research on Key Technology of Knowledge-Based Intelligent Fault Diagnosis of Hydraulic System

2012 ◽  
Vol 241-244 ◽  
pp. 313-316 ◽  
Author(s):  
Xue Xia Liu ◽  
Ye Fa Tan
Keyword(s):  
Fault Diagnosis ◽  
Hydraulic System ◽  
Object Oriented ◽  
Knowledge Bases ◽  
System Structure ◽  
Structure Model ◽  
Key Technology ◽  
Knowledge Based ◽  
Complete Knowledge ◽  
Fault Diagnosis System

A general framework of hydraulic fault diagnosis system was studied. It consisted of equipment knowledge bases, databases, fusion reasoning, knowledge acquisition and so on. The tree-structure model of the fault knowledge was established based on fault hierarchy and logicality. Fault nodes knowledge was encapsulated by object-oriented technique. Complete knowledge bases were made including fault bases and diagnosis bases. It could describe the fault positions, system structure, cause-symptom relationships, diagnosis principles and other knowledge. The results show that the methods are effective.

Integrated Study of Condition Monitoring and Fault Diagnosis System for Flexible Manufacturing System

2011 ◽  
Vol 179-180 ◽  
pp. 678-684 ◽  
Author(s):  
Xi Qin Wen ◽  
Zhong Min Zhao ◽  
Zhi Yu Xie
Keyword(s):  
Fault Diagnosis ◽  
Flexible Manufacturing ◽  
Manufacturing System ◽  
Flexible Manufacturing System ◽  
System Structure ◽  
Diagnosis System ◽  
Software Model ◽  
Fault Diagnosis System ◽  
Fault Mechanism ◽  
Integrated Study

On the basis of analyzing multiple fault mechanism of the flexible manufacturing system (FMS), the FMS diagnosis system architecture frameworks are built. The FMS status monitoring and fault diagnosis system and software model are especially proposed. The monitoring system structure and hardware composition are discussed, and software structure is also given. Finally, the FMS monitoring and diagnosis system are developed.

Electronic Equipment Fault Diagnosis Expert System Based on PDA/HPC

2013 ◽  
Vol 683 ◽  
pp. 925-928
Author(s):  
Lei Lei ◽  
Jian Hu Zhang ◽  
Wei Peng ◽  
Yong Wu ◽  
Lin Tao Li
Keyword(s):  
Fault Diagnosis ◽  
Reference Value ◽  
Structure And Function ◽  
Database Management System ◽  
Electronic Equipment ◽  
System Structure ◽  
Development Platform ◽  
Technical Realization ◽  
Fault Diagnosis System ◽  
And Function

In order to develope and research fault diagnosis platform of one electronic equipment, this paper mainly expound the equipment fault diagnosis system based on PDA/HPC structure and function as well as the development platform technology, introduce database management system structure and realization based on PDA/HPC. The successfully developed exepert system is of great significance to improve repair guarantee ability of the electronic equipment and its technical realization and application has model significance and reference value.

A Knowledge-Based Approach to Modelling of Robotic Assembly Cells

Robotica ◽  
1991 ◽  
Vol 9 (1) ◽  
pp. 31-42 ◽  
Author(s):  
Dae-Won Kim ◽  
Bum-Hee Lee ◽  
Myoung-Sam Ko
Keyword(s):  
Knowledge Base ◽  
State Transition ◽  
Knowledge Bases ◽  
The State ◽  
System Structure ◽  
Robotic Assembly ◽  
Knowledge Based ◽  
Job Information ◽  
Assembly Cell ◽  
Transition Map

SUMMARYIn this paper, an approach to modelling of a robotic assembly cell is proposed and a method for managing the cell operation is described using a knowledge base. Since the modelling structure is based on the concept of the state variable, the relationships between states are described by the state transition map (STM). The knowledge-bases for state transition and assembly job information are obtained from the STM and the assembly job tree (AJT), respectively. Using the knowledge-base, the System structure is discussed in relation to both managing the cell operation and evaluating the performances. Finally, a simulation algorithm is presented with the simulation results to show the significance of the proposed modelling approach.

Knowledge-Based Fault Diagnostic System Using Binary Fault Tree

2013 ◽  
Vol 333-335 ◽  
pp. 1752-1757
Author(s):  
Huan Liang Li ◽  
Xiao Qiang Yang ◽  
Jin Xing Shen ◽  
Liu Hai Chen
Keyword(s):  
Fault Diagnosis ◽  
Combustion Engine ◽  
New Technology ◽  
Fault Tree ◽  
Diagnostic System ◽  
System Structure ◽  
Analysis Model ◽  
Knowledge Based ◽  
Practical Tool ◽  
Hierarchy Process

For the improvement of reliability, safety and efficiency advanced methods of fault diagnosis, new technology and method such as expert system become increasingly important for many kinds of fault diagnosis. Thereby, the classification principle of system structure is used to build the hierarchical analysis model of combustion engine. The model is converted to binary fault tree by means of Fault Tree Analytical Method (FTA). Meanwhile, the knowledge base is constructed with production rule and frame representation. Fault diagnosis system is designed on the thought of analytical hierarchy process. Its development is accomplished by Delphi 7.0 language. The work has offered a simple and practical tool to users and brings great convenience to engineering corps.

Research on Hydraulic Cylinder Fault Diagnosis System Based on ARM

2012 ◽  
Vol 619 ◽  
pp. 489-493
Author(s):  
Xiu Xu Zhao ◽  
Zhe Min Hu ◽  
Yan Chen Shang
Keyword(s):  
Fault Diagnosis ◽  
Fault Detection ◽  
Hydraulic System ◽  
Hydraulic Cylinder ◽  
Diagnosis System ◽  
Fault Diagnosis System ◽  
Fault Mode ◽  
Detection Instrument

Hydraulic cylinder is an important actuator in hydraulic system, affecting the system running correctly and effectively. It’s closed and difficult to observe the failure symptoms, and result the difficulties of fault diagnosis and elimination for hydraulic cylinder. In this paper, a fault detection instrument and system for hydraulic cylinder are developed to diagnose the fault mode through position and pressure signals and infer decision based on FMEA base.

Study on B/S-Based Remote Fault Diagnosis System of Radar Equipment

2011 ◽  
Vol 383-390 ◽  
pp. 5605-5608
Author(s):  
Zhi Jian Sun ◽  
Xian Zhi Zhang ◽  
Wen Sheng ◽  
Shi Hua Liu
Keyword(s):  
Fault Diagnosis ◽  
Web Based ◽  
Diagnosis System ◽  
Key Technology ◽  
System A ◽  
Radar Network ◽  
Key Points ◽  
Fault Diagnosis System ◽  
Function Module ◽  
Set Up

This paper discusses a Web-based remote radar fault diagnosis and information system . A delicated radar network is set up with knowledge base and Web . The various key points about the structure , the function module and the key technology of the remote diagnosis system are analyzed and developed . In this way the real-time monition and automatical fault and diagnosis are realized , the reliability of the radar and the emergency repairing ability is improved .

Knowledge-based fault diagnosis system for refuse collection vehicle

2015 ◽  
Author(s):  
CheeFai Tan ◽  
K. Juffrizal ◽  
S. N. Khalil ◽  
M. Y. Nidzamuddin
Keyword(s):  
Fault Diagnosis ◽  
Diagnosis System ◽  
Refuse Collection ◽  
Knowledge Based ◽  
Fault Diagnosis System
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