基于可拓物元的滑动轴承运行状态的综合评价

The Comprehensive Evaluation of Sliding Bearings Operation State Based on Extenics Model

建立了基于可拓物元的滑动轴承故障诊断模型;在内燃机摩擦学与动力学试验平台上对滑动轴承的典型磨损状态进行模拟,并用可拓物元分析模型和层次分析方法对其运行状态进行定性与定量分析计算,实现了滑动轴承运行状态的综合评价。运用可拓物元模型,能够将故障特征参数的定性判别转化为定量的描述,实例证明其能减少人为因素的干扰,从而准确地确定滑动轴承的故障类型。

The fault diagnosis model of sliding bearings based on extenics matter element was established. The typical wear states of sliding bearings were simulated on the internal combustion engine tribology and dynamics test platform, and extenics matter element analysis model and the layer analysis method were used for qualitative and quantitative analysis to estimate the sliding bearings operation state, and the comprehensive evaluation of sliding bearings operation state was achieved. Using the extenics matter element, the qualitative discrimination of fault characteristic parameters could be transformed into quantitative description. An example proves that the model can reduce the interference from human factors, and determine the fault type of sliding bearings accurately.