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中文摘要：
基于广义S变换在处理非平稳信号的独特优势，将广义S变换（GST）引入到转子碰摩故障诊断中，利用广义s变换来提取具有不同的严重程度的转子碰摩故障信号的谐波特征．仿真研究表明：与小波变换和标准S变换相比，GST可以通过改变参数以适应不同信号的分析需要，并且具有更高的时频分辨率．试验结果分析表明：该方法能够有效地揭示出碰摩故障数据的频率结构，区分碰摩故障的严重程度．
英文摘要：
Based on the unique features of the generalized S-transformation （GST） in dealing with non-stationary signals, the GST is introduced into the rub-impact fault diagnosis of rotor system. This method is used to extract the harmonic features of rotor rub-impact fault signals with the different severity. The simulation results show that the GST method can change the parameters to suit the needs of different signal analysis when compared with the wavelet transform and the standard S-transformation. And can obtain the higher time-frequency resolution. The experiment results show that the proposed method can effectively reveal the frequency structure in rubbing fault and discern the severity of rub-impact fault.
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