Citation: | LIU Zhaoxia, SUN Yufeng, XUAN Jie, et al. Mission reliability allocation method considering multiple factors for repairable systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(4): 834-840. doi: 10.13700/j.bh.1001-5965.2018.0472(in Chinese) |
In practical engineering, a system is usually complex and repairable. Its reliability model is not a series model but a mixed model of series, parallel, bypass and voting. The equal-distribution method is used mostly to allocate mission reliability for complex system at present. The allocation result using this method is always not accurate. Therefore, a mission reliability allocation method for repairable system considering the effects of maintenance, fault logic and other factors was proposed in this paper. First, the failure rate was calculated to remove the effect of maintenance. Then the scoring allocation method considering failure logic was adopted to allocate mission reliability. After that, the spare part coefficient was used to correct the allocation result. Finally, a case was analyzed to validate the method, which could provide an easy and effective way to allocate mission reliability for repairable systems in practical engineering.
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