基于瞬时频率估计阶比法的电机振动信号分析

摘要

The motorr otating shaft is a very importa nt part of them otor. It can be estimated and evaluated byu sing the me-thod of sign al analysis. In order to improv e the safety of the motor sha ft and reduce th e accident rate , the vibration signal of the motor wasc alculated by th e method of in stantaneous fre quency estimat ion and the ord er ratio metho d. The resultss how that the method base d on instantan eous frequency estimation cou ld effectively reduce the nois e and accurate ly predict thes pecific loca-tion of thef ault.%电机转轴是电机中至关重要的精密零部件，运用信号分析的方法，可对电机转轴进行预估评价。为提高电机转轴的安全性，降低事故率，利用瞬时频率估计法与阶比法计算分析电机的振动信号，并进行电机实际缺陷情况下的验证试验。结果表明，基于瞬时频率估计阶比法能对信号进行有效降噪处理，准确地预测故障缺陷的具体位置。