为了分析发电机组振动信号在能量和波形方面的细小变化，从而反映发电机组的早期故障趋势，提出了基于数学形态谱的故障特征量。
Fault features based on pattern spectrum were presented for analyzing tiny changes of energy and waveform of generator sets vibration and reflecting the trend of early faults.
为了提取机车滚动轴承早期损伤类故障特征，本文提出了一种双重小波平均谱方法，并通过诊断实例验证了方法的有效性。
To extract early fatigue feature of engine bearings, the paper presents an average spectrum method with double-wavelet and the diagnosis examples are used to show the validity of the method.
可以将三阶谱的峰值作为判断气阀是否漏气的一个诊断特征量，同时也为诊断内燃机气阀的早期漏气故障提供了依据。
The peak value varies in different fault conditions and it can be used as a characteristic for diagnosing leakage fault of exhaust valve, the fault in initial stages can also be diagnosed.
理论和实验研究表明：叶片机械如风机之类可通过多参量特征监测对早期和严重的裂纹故障进行诊断。
The diagnosing sensitivity and reliability are very high. So it can be used for condition monitoring and diagnosing early or serious cracks in fan or something alike.
介绍了采用多传感器对采煤机的运行状态进行监测，通过小波包对监测信号进行分析，得到其特征频率信息，以达到对其早期故障的预测。
The paper introduces a method of using multisensor to detect running state and using the wavelet packet transform to analyse the signals. In the ends the character frequ…
试验结果表明，该方法能够突显变压器绕组的故障特征信息，为变压器绕组的早期故障的诊断奠定了坚实的基础。
The results of experiments show that this method can highlight the characteristic information of faults in windings, therefore it lays a solid foundation in detecting the incipient faults in windings.
试验结果表明，该方法能够突显变压器绕组的故障特征信息，为变压器绕组的早期故障的诊断奠定了坚实的基础。
The results of experiments show that this method can highlight the characteristic information of faults in windings, therefore it lays a solid foundation in detecting the incipient faults in windings.
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