基于AHP-FTA的齿轮传动安全性评价

Safety evaluation of gear transmission based on analytic hierarchy process-fault tree analysis(AHP-FTA)

为量化评价齿轮传动系统的安全性,采用层次分析法(AHP)对齿轮传动系统进行失效因素的权重分析,并引入事故树分析(FTA)技术,系统地分析了导致齿轮传动失效的基本事件,以此作为层次分析法指标权重的赋值依据。齿轮传动系统故障树所得的指标权重说明,载荷监控对于齿轮传动安全性的影响最大,其次为齿轮的润滑管理和安装精度。在此基础上,建立了齿轮传动系统安全评价模型,设定了安全评定等级,通过加权求和的方法对齿轮传动系统进行了量化评价。

In order to evaluate the safety of a gear transmission system quantitatively,the weights of gear failure factors in the safety evaluation of gear transmission systems have been analyzed based on analytic hierarchy process（AHP）.Fault tree analysis（FTA） was also introduced to analyze the causes of gear failure as the basis of weight assignment.A safety evaluation model of the gear transmission system was constructed and its safety grade was set.Quantitative assessment of the gear transmission system through a linear weighted sum law was implemented.This method for safety evaluation of gear transmission systems combining AHP and FTA provides a new and effective way of quantitatively assessing safety grades.