Bearing's fault features are easy to be exposed and difficult to be extracted during acceleration of a gearbox.In order to solve this problem,an order cepstrum enhanced with Teager energy operator was presented.Firstly, Teager energy operator of a signal during acceleration resampled with even angle-interval was calculated.Then,the output of Teager energy operator was analyzed with the order cepstrum method,the order cepstrum enhanced with Teager energy operator was obtained.The signals of exfoliation faults of outside and inside rings of a rolling bearing during acceleration were analyzed.The results showed that Teager energy operator can be used to effectively enhance impulse components and restrain non-impulse components;the order cepstrum can be used to identify fault impact features from interferences accurately and extract the weak fault features of the bearing.%针对变速器加速过程下轴承故障特征易于暴露难以提取问题，提出一种Teager能量算子增强倒阶次谱方法。计算加速过程等角度重采样信号的Teager能量算子，对Teager能量算子输出进行倒谱分析，获得Teager能量算子增强倒阶次谱。对加速过程滚动轴承外圈、内圈剥落故障信号进行分析，结果表明，Teager能量算子能有效增强冲击成分，抑制非冲击成分；倒阶次谱能从干扰中准确识别被增强的故障冲击特征，提取轴承微弱故障特征。
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