基于物元模型的齿轮磨损状态分形评估方法

A fractal evaluation method for wear condition of gear based on matter-element model

为实现齿轮磨损状态的准确评估,设计齿轮副磨损实验,进行全寿命周期磨损实验,根据磨损率、磨粒群分形维数、振动信号变化趋势以及工况条件,划分5个不同的齿轮磨损状态。选择计算简单、权值易于确定的物元评估方法作为评估齿轮磨损状态的方法,利用磨粒群分形维数建立齿轮磨损状态的物元评价模型,并用实验测试数据进行实验验证。研究结果表明:物元模型能有效地评估齿轮不同的磨损状态,对齿轮磨损状态的评估准确性达91.67%。

To a cquire accurate assessment of the condition of gear wear, the gear pair wear test was designed, and the whole life cycle experiment of gear wear was carried out. Five wear stages were acquired by wear rate, wear particle fractal dimension, vibration signal and working condition. The matter-element assessment method was selected as the evaluation method of gear wear condition for the method makes it simple to calculate and easy to determine the weights.The matter-element evaluation model based on fractal dimension of wear particle group was established and verified by test data extracted from wear test. The results show that accurate assessments in different conditions of gear wear are acquired by matter-element model, and the assessment accuracy rate of wear conditions reaches 91.67%.