差分振子相图的自动识别与应用  

Automatic identification of difference resonator phase diagram and its application

作　　者：胥永刚[1] 马海龙[1] 冯明时[1] 崔玲丽[1] 

机构地区：[1]北京工业大学机电学院北京市先进制造技术重点实验室,北京100124

出　　处：《振动与冲击》2011年第10期169-172,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金(50705001);国家863计划项目(2009AA04Z417);北京市教委科研计划(KM200910005007)

摘　　要：通过仿真实验证明了差分振子相图的大小和待检测信号幅值大小之间的关系。在相同的参数条件下,差分振子的相图越大,则待检测信号的幅值越大。因此,在参数相同的条件下,对不同的差分振子相图进行比较,可以得到待检测信号幅值间的大小关系。针对差分振子相图的特点给出了差分振子识别的新方法,可以快速识别差分振子是收敛于极环还是极点。最后,通过工程数据的分析成功发现了设备故障发生发展的劣化过程,并对差分振子的相图进行识别,取得了理想的效果。The relationship between the size of difference resonator phase diagram and the amplitude of a signal to be detected was verified through simulation tests.The larger the difference resonator phase diagram,the larger the amplitude of the signal,under a condition of all the same parameters.The relative size of the signal amplitude was obtained from the difference resonator phase diagram.According to characteristics of difference resonator phase diagram,a new method was proposed to identify a difference resonator phase diagram.At last,an equipment failure and its development process were found through anzlyzing the data measured from a factory.Its difference resonator phase diagram was identified and the desired results were obtained.

关 键 词：差分振子 幅值检测 相图识别 故障诊断 

分 类 号：TH133[机械工程—机械制造及自动化]