摘要
由于转速的随机波动,旋转机械振动信号是一类非平稳的信号,所以以平稳信号为分析对象的传统的谱分析技术在此类信号面前显得无能为力.在分析国内外有关阶比分析的文献资料的基础上,简单总结了阶比分析方法的基本理论,列举了常见的阶比采样方法,并指出了阶比分析方法的不足之处,提出了一种新的针对旋转机械转速波动下的周期平稳角域信号的分析方法——转谱分析.
Because the vibration signals of rotating are nonstationary signals, the classical spectrum analysis method which is only the same with the stationary signals is unavailable for these signals. The authors summarize the basical theory about order analysis, enumerate some popular method of order analysis, point out the limitation of order analysis, put forward a new method of spectrum analysis rotating spectrum which aims at the periodic stationery signals in angular domain.
出处
《长沙理工大学学报（自然科学版）》
CAS
2007年第2期54-58,共5页
Journal of Changsha University of Science and Technology:Natural Science
基金
湖南省自然科学基金资助项目(06JJ20045)
关键词
旋转机械
周期平稳信号
阶比分析
阶比跟踪
转谱分析
rotating machine
periodic stationary signals
order analysis
order tracking
rotating spectrum analysis
