Aeroengine Oil Fault Diagnosis Based on D-S Evidential Theory

Abstract:

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Aeroengine oil contains wear debris generated by friction. Based on the Dempster-Shafer evidence combination theory, aeroengine wear conditions can be effectively diagnosed. Through analysising the elements of wear debris in lubricating meduim, it can determine engines wear levels and wear parts, as references for troubleshooting. In the process of combination, an method was proposed that every element of wear quantity and wear rate were fused at first,then the integration of all elements. For Dempster-Shafer has its own limitations, two impoved methods were applied to and were compared. The results show that Dempster-Shafer evidence combination is an effective fault diagnosis method for aeroengine oil wear condition.

Info:

Periodical:

Edited by:

Hun Guo, Taiyong Wang, Zeyu Weng, Weidong Jin, Shaoze Yan, Xuda Qin, Guofeng Wang, Qingjian Liu and Zijing Wang

Pages:

15-20

DOI:

10.4028/www.scientific.net/AMM.141.15

Citation:

H. C. Qu et al., "Aeroengine Oil Fault Diagnosis Based on D-S Evidential Theory", Applied Mechanics and Materials, Vol. 141, pp. 15-20, 2012

Online since:

November 2011

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Price:

$35.00

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