TAILIEUCHUNG - Application of ontology to knowledge management of sucker rod pumping system fault diagnosis

The comprehensive diagnosis ontology database, including the knowledge domains of fault, collection and structure, is established. And the relationships among the ontology are described. | Journal of Automation and Control Engineering, Vol. 1, No. 2, June 2013 Application of Ontology to Knowledge Management of Sucker-rod Pumping System Fault Diagnosis Peng Cheng Tsinghua University, Beijing, PRC Email: pengchengthu@ Yan Jian Xi’an Shiyou University, Shanxi Xi’an, PRC Email: Abstract—Sucker-rod pumping system operating status fault diagnosis technology is closely related to the energy consumption, production per well and the cost of crude oil exploration. But the knowledge depiction of the expert diagnostic system is mainly based on the production rules, neural networks or object-oriented. As ontology has advantages in hierarchy and semantic relationships expressing, it is can be used in the knowledge management in the expert diagnostic system of the fault diagnosis technology. Then an ontology model for sucker-rod pumping system running state fault diagnosis system is also proposed in this paper. Basing on ontology, the knowledge management system framework is built up, which includes data layer, logic layer and application layer. The comprehensive diagnosis ontology database, including the knowledge domains of fault, collection and structure, is established. And the relationships among the ontology are described. this technology appeared after the emerge of expert systems [13], [14], [22], [23], neural networks [15] and pattern recognition technology [16]-[21]. The expert diagnosis system developed by H. J. Derk [13] has three main auxiliary programs: API, DHOLE and VIEW. By aid of the auxiliary programs, some tasks can be done: carry out the designs for conventional pumping device to get the rated operating parameters which are used as the reference data, calculate the hydrodynamic forces and inlet pressure of the pump basing on the transformation from the ground indicator diagram into downhole one, and so on. It also can help users to find out one certain fault group similar to the downhole indicator diagrams from

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