Fuzzy reasoning method for path of fault propagation in vertical ship lift hydraulic system

doi:10.16265/j.cnki.issn1003-3033.2017.04.016

China Safety Science Journal ›› 2017, Vol. 27 ›› Issue (4): 87-91.doi: 10.16265/j.cnki.issn1003-3033.2017.04.016

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Fuzzy reasoning method for path of fault propagation in vertical ship lift hydraulic system

CHEN Shu^1,2, WANG Yue^1,2, WANG Jianping^1,3, SHEN Haobo^1,2, LI Zhi⁴

1 Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang Hubei 443002, China
2 College of Water Conservancy and Environmental Science, China Three Gorges University, Yichang Hubei 443002, China
3 College of Economics and Management, China Three Gorges University, Yichang Hubei 443002, China
4 Mechanical and Electrical Department, China Three Gorges Company, Yichang Hubei 443002, China

Received:2016-12-05 Revised:2017-03-15 Published:2020-11-22

Abstract

Abstract: Taking into account the correlations and chain-interloacking actions between the structures in an existing vertical ship lift hydraulic system, an FPN model was built for fault propagation to effectively reduce system malfunction in the vertical ship lift. Firstly, the process was preseated abstrictly with the applying of basic variables in FPN, failure propagation in the hydraulic system on the basis of the basic principle of FPN. The fault modes of the hydraulic system were analyzed. An FPN was stablished after clarifying the logical relationship between the fault locations. finally, the fault propagation path was deduced fuzzily using the transition rule. The Three Gorges ship lift was analyzed by using the method. The results indicate that the most likely propagation path to bring in the failure of vertical lift ship hydraulic system is the damage to the control valve,the failure of hoist, the failure of pressure keeping,failure of pressure keeping, may further bring failure of hydraulic hoist of ship carriage, and the whole system may stop working.

Key words: fault reasoning, hydraulic system, propagation path, fuzzy Petri net(FPN), vertical ship lift

CLC Number:

X924.3

CHEN Shu, WANG Yue, WANG Jianping, SHEN Haobo, LI Zhi. Fuzzy reasoning method for path of fault propagation in vertical ship lift hydraulic system[J]. China Safety Science Journal, 2017, 27(4): 87-91.

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Fuzzy reasoning method for path of fault propagation in vertical ship lift hydraulic system

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