摘要
将混沌分形引入传动轴振动信号的故障分析中 ,用关联维数来刻画振动信号的故障特征。通过对试验获取的传动轴振动信号进行分析计算 ,确定了分形维数与传动轴故障程度之间的联系。计算表明 ,传动轴振动信号具有分形特征 ,且分形维数均在 2维与 3维之间 ,随着传动轴不平衡加剧 ,它向 3维逼近。当样本点达到一定数目时 ,计算结果的稳定性好。
Let the chaos fractal be introduced into the failure analysis on vibration signal of transmission shaft, and using interrelated number of dimension to depict the failure characteristics of vibrational signal. By means of carrying out the analytical calculation on the vibrational signal of transmission shaft obtained from test, the relationship between fractal number of dimension and failure extent of transmission was determined. The result of computation shows that the vibrational signal of transmission shaft possesses fractal characteristics and the fractal number of dimension will all exist between 2D and 3D, and along with the intensification of transmission shaft's disequilibrium, it approaches to 3D. While the sample points reach to a certain number, the stability of calculation result is good.
出处
《机械设计》
CSCD
北大核心
2004年第10期32-33,37,共3页
Journal of Machine Design
