摘要
为解决故障树分析时无法获取足够基本事件故障率的问题,文章研究提出模糊故障树分析法。通过将专家判断转化为具体的模糊概率值,从而确定基本事件的发生概率,并完成对故障树顶事件发生概率和关键重要度计算。以某重型卡车的电驱动桥为例,通过建立电驱动桥不工作的故障树,对模糊故障树进行定量分析,确定了影响系统可靠性的关键故障因素,为相关工作者提供一定的参考借鉴价值。
For solving the problem of insufficient basic event failure rate in fault tree analysis,a fuzzy fault tree analysis method is proposed in analyzing complex systems.By converting expert judgments into specific fuzzy probability values,the probability of basic events occurring is determined,and the probability of the top event and critical importance of the fault tree are calculated.Taking the electric drive axle system of heavy-truck as an example,by establishing a fault tree for electric drive axle not working,and through quantitative analysis of fuzzy fault tree,the key fault factors affecting system reliability are confirmed,and provides certain reference value for relevant workers.
作者
傅强
FU Qiang(School of Management,Shanghai University,Shanghai 200444,China)
出处
《汽车实用技术》
2024年第17期109-114,共6页
Automobile Applied Technology
关键词
模糊故障树
梯形模糊数
可靠性分析
重卡电驱动桥
Fuzzy fault tree
Trapezoidal fuzzy number
Reliability analysis
Heavy truck electric drive axle
