| Citation: | LAN Xue, DUAN Fuhai, SANG Yonget al. Application of GO-FLOW methodology in reliability analysis of aircraft EHA[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(6): 1264-1270. doi: 10.13700/j.bh.1001-5965.2016.0444(in Chinese)
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The GO-FLOW methodology is applied in the reliability analysis of aircraft electro-hydrostatic actuator (EHA). Firstly, based on the reasonable division of unit function, GO-FLOW reliability analysis model of EHA was established. In order to solve the difficult problem that GO-FLOW chart cannot contain feedback loops, Boolean algebra was used to solve the Boolean equations that describe the feedback loops. Secondly, the GO-FLOW calculation was finished and the system reliability at each time point was obtained. Thirdly, compared with the results of GO methodology, the feasibility and accuracy of GO-FLOW methodology were clearly verified. Finally, the system reliability changing rule with time was obtained through the MATLAB curve fitting so that the system can be repaired and maintained timely. The results show that the GO-FLOW methodology can easily obtain the system reliability at each time point with only one operation and has more advantages than GO methodology in reducing computational complexity.
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