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

Abstract:

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.

• Periodical: Applied Mechanics and Materials (Volumes 241-244)
• Pages: 313-316
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.241-244.313
• Online since: December 2012
• Authors: Xue Xia Liu, Ye Fa Tan
• Keywords: Fault Diagnosis, Knowledge Base, Object-Oriented Technique, Tree Hierarchical Model

References

[1] National Instruments Corporation: SC-2345/2350 Carrier User Manual, Austin: National Instrument Company, (2006).

[2] Suochang Yang, Chen Meng and Shaohui Cui: Computer automated measurement&control, Vol. 9 (2001), pp.33-35, in Chinese.

[3] Meijun Zhang, Xiaoqiang Yang: Engineering machinery fault test (PLA University of Science and Technology Press, Nanjing 2000), in Chinese.

[4] Li Chen and Zhenjie Lin: Industrial control technology, Vol. 10 (2006), pp.92-94, in Chinese. Fig. 2 Measurement sensor node structure.