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| Fuzzy Fault Tree Analysis of Aircraft Landing Gear Based on Weakest T-norm |
| Received:March 18, 2017 Revised:July 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.07.021 |
| KeyWord:fuzzy fault tree analysis weakest t-norm aircraft landing gear fuzzy number reliability assessment |
| Author | Institution |
| LIU Hong-jian |
School of Reliability and System Engineering, Beihang University, Beijing , China |
| YAO Jun |
School of Reliability and System Engineering, Beihang University, Beijing , China |
| LI Pei-chang |
School of Reliability and System Engineering, Beihang University, Beijing , China |
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| Abstract: |
| Objective According to disadvantages of fuzziness on failure of landing gear components and application of extension principle and interval arithmetic in traditional fuzzy fault tree analysis leading to accumulation of fuzziness, this paper aims to propose a new analysis method for fuzzy fault of aircraft landing gear based on the weakest t-norm. Methods The fuzzy failure probability of aircraft landing gear components was represented by trapezoidal fuzzy number, and the fuzzy operation rules of the weakest t- mode were given, and the fuzzy fault tree analysis was carried out with the weakest T- norm rule. Results The fuzzy failure probability of aircraft landing gear system and the importance of components were obtained. Conclusion Compared with the traditional fuzzy fault tree analysis method, the proposed method is more flexible and applicable, which lays a foundation for the reliability assessment of aircraft landing gear. |
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